Drayton Digistat SCR easy repair with a capacitor, also same for Iflo or British Gas marked units
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- เผยแพร่เมื่อ 9 ก.พ. 2025
- The aim of this video is to show you how easy it is to repair a faulty Drayton Digistat SCR unit.
The most common fault is: you call for heat, you get a green light on your SCR, your SCR DOES NOT 'click', and your boiler does not fire up. This is a 99.9999% fixable with a simple capacitor change, saving you anything between £60 to £100's.
The capacitor can throw other strange faults too, but the above is the classic fault, Drayton will tell you to buy a new unit. I can supply the capacitor to you for just a few quid delivered to your door.
Your board may not look exactly the same as shown on my video but the capacitor is the same, Drayton have a few different PCB designs, but the capacitor circuit is the same.
Look me up on eBay,
www.ebay.co.uk...
my username is Bearsy72 or search eBay for "Drayton SCR Part", this will take you to my listing.
Thanks for viewing and I hope I can help you.
******* Have just worked out what the fault is if you have a DEAD SCR, If it has no lights on at all, or if it is making a strange constant clicking noise then go to my eBay page and drop me a message ******* - วิทยาศาสตร์และเทคโนโลยี
look on eBay search for "Drayton Repair Part" I am the seller 'bearsy72' , hope to hear from you. Dave
Great, useful and easy to follow video. My drayton digistat scr went dead. (no lights) As recommended on his video - I went to David’s eBay page and asked. He was quick to diagnose my faulty scr. I choose to have the repair service as I thought some of the components were very tiny to soldier. (while my scr was away for repair, I still had hot water and central heating working manually as a friend told me how to turn off/bypass the timer temporarily) David also mentions - he can tell you how to have your central heating working as a temporary measure, which I think is great. I had my scr repaired, delivered, fitted by myself and working in less then seven days. I thought the service David offers is excellent, honest and reliable. And his video helped me save some money. Thank you.
Cheers mate for the kind words
Dave answered my email immediately and I sent him my Digistat to be repaired, power and capacitor. Superfast and friendly - thanks Dave!
Anytime, glad to help out, enjoy ur heating again lol. Good luck stay safe
Very interesting video. My heating went on the blink yesterday so I called out British Gas (We have 3* service) and he called today and changed the receiver. He told me about your TH-cam video!
Hahahaha really, glad u got a new box, shame they dont send me all the duff ones lol
It's early days but this seems to have worked a treat. Drayton told me on no account should I change the capacitors (they didn't even say it would ok if an electrician did it), they said I'd have to replace both receivers at a cost of £250. £240 saved in half an hour and I have two working receivers. Genius. Thank you so much.
I was looking to buy a whole new scr. But really pleased I came across this post. Bought a new capacitor for £3.99 and followed David's instructions. Job done, central heating working again. Thank you David.
Hi mate I k now this was a long time ago but what capacitor is it that is needed?
Hi David, great video, I bought the capacitor and took the circuit board to a computer repair shop who removed the old one a soldered on the new one, he didn't even charge me but I gave him a tenner. Worked a treat, the heating is on, the wife is happy and I am having a peaceful life once again. Many thanks...
We found this video on Friday morning, ordered the capacitor from you later that morning, it arrived on Saturday morning and by lunchtime, the heating was working. Thank you very much.
Happy days. glad I could help.
David Williams has just repaired my SCR receiver. He's very quick (sent Tuesday, back on Friday!). In my opinion, he is not charging enough to repair the fault I had, where the lights go completely dead, which is harder to fix than the one in the video. I paid more than he asked because it requires some very fiddly soldering of extremely small components. I could have probably done it when my eyesight was better, but getting the right components economically would have been a pain. Brilliant job.
Thanks for your great words, glad I could help
Thank you, an excellent video. I wasn't as skilled as you at getting in but it's a very old unit. the vacuum unit I had seemed too inefficient compared to yours but managed to swap them out having ordered your product. the double-sided sticky foam and solder was a nice touch. Now I get a click every time so far. I wish I'd found you earlier. I suspect I've paid for a new boiler because the engineer was convinced it was the PCB in the boiler. It was due but was hoping for another couple of years.
Glad you are up and running again
I had a struggle getting the old capacitor out, but the rest was straight forward and I was thrilled when the heating fired up again. All for only £4 plus the cost of a soldering iron! I'm really grateful to you for saving me £100 or more. Keep up with the good work!
here is a tip for you guys. If you don't have a solder sucker, then do as I say at the 2mins marker, cut the legs as close to the old capacitor as you can. The only thing holding the capacitor to the board is a double sided pad, a small flat blade under the cap should ease it off. Then ADD a little more solder to the joint of the old legs, then when the solder is hot and flowing still with the iron on the leg use a pair of pliers to gently pull the legs out one at at time, if you feel friction stop and ensure you are hot enough. Any problems message me. Dave
Thankyou worked exactly as described. Removing the SCR from the wall plate was easy, just undo the two screws on the bottom and it lifts off. There are no wires etc to disconnect. Just be mindful the wall plate is still 'live' so turn the switch or power off. I needed to heat the old solder up a fair bit more than in the video to remove enough of it to clear the two holes so the new wires could push through. Other than that it all went well. Never soldered before and even with limited skills the video made it easy.
Nice work mate, well done
thanks mate . my central heating was driving me mad not coming on but was dreading paying for a new system . must admit i was sceptical but thought what the heck. i bought from you on ebay and it worked a treat . really appreciate it .
Nice one mate happy to help
Quoted over £140 for fix from my boiler maintenance man, did this myself with the kit supplied from Dave in a few minutes using this video. Had a happy warm Christmas.
Capacitor arrived earlier than expected, took me 10 mins to fix my heating for £3. You are a legend! Thank you
5000JRT happy to help mate. Enjoy ur heating again
Thanks very much David. Ordered one from you a while ago because of intermittent heating. Just got round to fitting it yesterday. Fantastic👍 heating is now working perfectly now. Going to buy another from you now to ensure I have one spare for the future. Thanks again for your help.
Glad it worked for you, any problems just drop me a message
My last one lasted two years, just received and fitted second one and problem solved. Thank you.
Thanks for the info, got my heating back working after 2/3 months of the receiver suffering this intermittent fault. Followed the instructions, took approx 4 mins of my time, saved over a hundred pounds easily. Cheers pal.
MBE 2017 happy to help mate. Glad all is good again
My problem was that the central heating was not going off even when the thermostat was telling it not to heat. I replaced the capacitor and it is working perfectly now. Great solution!
Happy to help mate, glad all is well again. That capacitor can cause some strange faults. Well done you
Ordered Capacitor Friday fitted this morning, all working now👍 thank you
Glad all is good again. Nice work
My capacitor arrived today and with your guidance I have managed to fix my digistat and it's working as new.....many thanks to you
Well done Dave. Excellent easy to follow video. Wished I'd seen this before I paid my plumber £140 for a part I didn't need!
Thanks so much. The capacitor arrived in 2 days, and with the clear instructions I've done the job. Fantastic.
We did have trouble getting it off the wall at first but discovered 2 small screws underneath the wall mounted box!
Cheers mate part arrived from ebay quick and sorted the problem in 10mins 👍🏽
Just had mine done and it appears to be working fine, many many thanks for the info David, my plumber wanted to install a whole new remote set up, pleased I found you when I did other wise I'd be a couple of hundred quid out of pocket !!!!
Thank you David...I brought the capacitor from your ebay account and it worked..save me around £100 ...thanks a lot
Happy days mate. Nice work
Thanks David you saved me a fortune.
It took me a lot longer than you to do it but the end result was just as good.
Thank you so much. After much searching I stumbled upon this video and saved myself a small fortune. You're a star. Cheers.
TOther Simon no problem glad to help
Great support Dave! - easy to follow instructions to replace capacitor and very responsive troubleshooting! (Dave knows this unit!) Heating now up and running without expensive replacement being needed - thanks Dave!
Tim Carter happy to help mate. Glad all is good once again.
Bought the capacitor from David. It arrived promptly and included the double sided pad and solder needed to fit the part. Following the video made the component change easy (opening the case was the most difficult part) and the digistat is now working again.
Just wanted to echo the thanks and appreciation of others. This was my introduction to soldering and a very welcome DIY money-saver. Excellent instructional video, and prompt service ordering the capacitor etc. from you on eBay.
Part arrived today, fitted it, works like a dream.
Thanks m8 you have saved me loads of dosh.
Cheers
Paul
Tor Asgard happy days glad I could help
Thank you SO much!! Bought a capacitor from you, it arrived the next day, and this video made it super easy to fit! You're a legend!! Thank you!! :D xx
This fix worked for me. Swapped the faulty capacitor for £3. A gas heating engineer quoted me £175 to replace the receiver...erm. no thanks. Great video to show a diy-er to save lots of cash. Heating works fine now off the thermostat.
glad I could have helped out, enjoy the heating once again :)
Just saved me £160, worked perfectly.
Happy to help
Ordered the part from you...copied what you did in the video and my heating is sorted..👏👏...nice work pal..thank you..
Pfoxi258 nice work dude
Top Man!!!!
Instead of chewing on trying to fix this yourself, send the unit to this man David Williams, He fixed mine in one day and returned it to me.
Very cheap! and quality service
It worked first time!!
Thanks for all your Help Dave.
Cheers
Andrew
Thanks very much for this. Bought the capacitor from you. Followed your instructions. Worked a treat!
Kev Baz nice work mate
Brilliant. Worked perfectly. Heating is running and I've not had to shell out for a new receiver. Thanks.
Thank you. Got a cap of your ebay store, fitted it and my heating is working perfectly again. I measured the value of the cap I removed and it was about half the rated value. So it is not unexpected that it failed to work as the capacitor dropper circuit output would have been much lower than the design limit.
I had two of these digistats controlling different circuits, one stopped working years ago and I put both zones on the one controller. The second one stopped working recently and tried this fix on both units and hey presto both units now work! Thanks for the video.
Thanks for the posting, My issue was no signal is being received (if i do a manual override it works fine!) - and i saw the comments below about how to remove it from the wall, which answers my other questions!
This is epic. Sorted me right out. Thanks mate 👍
happy days, glad all is good once again, nice work
Thanks for this! Saved me in excess of £100 I’m sure. The sticky pad on the existing capacitor was a bit tricky but using a Stanley knife sorted it out. Didn’t have a soldier sucker so did what you said and pull out the legs using some snips. Quick delivery on the capacitor too.
Well done you, enjoy your heating once again, just in time for a cold snap :)
Ok but how to open box if is screwed into the wall???
Are you able to access the 2 flat head screws on the underside of the SCR, if so slacken then off and it should hinge from the top.
Yes 🙏 thanks
@danieltenderenda4120 happy days
Thanks for the video. Bought the CAP from you and fitted in about 20 minutes. workign well.
Thank you very much
Hi David, thank you for your clear and precise instructional film. I've followed your film and replaced the capacitor. The green light has come on, there is a click when I turn the temp on the thermostat up, but still there is no response from the boiler. Any suggestions what else it could be? I appreciate this is an old post but it still seems relevant as the Drayton +3 Stat I have is only one year old, as is the Grant boiler, with which I am having all manner of issues, very frustrating.
Can u look me up on ebay and find my contact details on there and drop me an email or a text message
@@xxxxbigdavexxxx Hi David, just to conclude the conversation,tion, it turned out to be loose wiring, which a boiler engineer picked up on. Problem resolved now but many thanks for your input
I’ve got this problem & just ordered one.
i see your order, will post the spares out in the next 20mins, any problems just give me a shout
thanks for the video and ebay shop. Fixed my intermittent heating failure.
happy days, well done Roger.
Hey Adam, if all u r doing is removing the SCR then just isolating the SCR should be fine, however if u are playing around with the wires on the back plate of the SCR then I would say go to ur fuse board. When the SCR is off please ensure the back box is left safe, people in the past have taped up the open box to avoid any type of personal contact.
Just ordered a capacitor from you. Hope it sorts my issue, certainy sounds like it. Hot water works fine, but about every 3 days the heating stops coming on when the green light comes on, no click is heard. Weirdly, turning the power off for a few minutes at the fused spur and then on again sorts it out (for a few days).
Super, just ordered a capacitor from you on ebay, wish me luck!
Chris Chalk Art Studio you will be fine . any problems drop me a message
This works a treat - took me about 12 min.
I've just got the kit , thanks. My SCR is in a dark airing cupbord (not unique) - how do I get it off the wall ?
Hi there... just ordered the cap off you... how do I remove the front cover when its screwed to the wall ? Thanks in advance...
Switch off the boiler and receiver. Look at the underside of the unit. You will see 2 flat headed screws, slacken them off (do not take them all the way out), the unit will hinge from the top, the wires will stay on the wall wiring plate. Hope this helps
@@xxxxbigdavexxxx Thanks so much..the installer had put it so close to trunking that i did not see them but after taking a photo with my phone, there we go.. Thanks again for your help and looking forward to sorting it soon. Luckily, i have a log burner going to heat my house... A+ mate.
@@xxxxbigdavexxxx Hi David, Capacitor arrived fast and well packed. Removed old one and soldered the new one in. Put everything back together and turned system on. The SCR flashes red and then goes green, together with a click. Boiler tries to fire up the CH but then after a minute the green pilot light goes out. Hot water is fine. Noticed that when I try increasing the temp up to say 22, the SCR does not flash or seem to talk to it... only when you ytake the batteries out of the remote and reset it... you get the click nut then does not talk to the remote/scr.. I also noticed the black relay was made in 2007 and guarantee to 2011... Could it be this or do you think a whole new unit.. I prefer a wired one without all the messing about... Log burner on for now but any suggestions welcomed. Thanks for a great service on the capacitor and the vid... Cheers, Paul
@@xxxxbigdavexxxx Hi David, another silly question... do I need the link in at the back of the Drayton RF1 ? Mine is missing for some reason.. just moved into the house a few months ago but it was all working before...
Wished I saw this a few hours ago. Great guide.
Great vid but I don’t have any lights at all on the receiver. Have reset several times with the same ‘flame’ symbol showing on the thermostat. I intend to buy a capacitor from you and hope this fixes it. Thanks
Nah capacitor wont fix that fault, you will need more parts, drop me a message and I will sort u out. Cheers Dave
Thanks David, used your capacitor and video and sorted in a matter of minutes!
By an amazing coincidence, I have my dis-assembled Drayton SCR in front of me. Exactly as you describe, the green light comes on but the relay isn't driven. It's a 24V relay but only getting about 8.8V across the coil. What led you to the 0.68u EMC cap? When I probe mine, I just see the 1Meg resistor across it - no leakage (at low voltage, anyway). I see about 13V on the electrolytic cap, which looks too low. I admit to hating circuits with non-isolated 240V nearby!
Hi Dave, I have no lights at all on the receiver, we have changed the capacitor a few years back, is it likely to be that again? I can’t find you on eBay either? Sorry we have no heating.
Hi mate
www.ebay.co.uk/itm/172820426361?hash=item283ce66e79:g:KOcAAOSwGi9hMSUV
Normally dead units need more than just a capacitor, I can fix this for you no problem at all
Look me up
@@xxxxbigdavexxxx the link you’ve sent isn’t working, it says eBay can’t display the page? I’d really like you to repair the problem as it was your video and capacitor that fixed the issue last time.
@@kerryloader7380 sorry old link, try again
www.ebay.co.uk/itm/172820426361?hash=item283ce66e79:g:KOcAAOSwGi9hMSUV
@@xxxxbigdavexxxx fab thanks, have to get my Dad round to remove it, so hopefully will get it sent over the week end, so relieved you are still doing this… :)
@@kerryloader7380 no worries mate, still here fixing these things,
Hello David...Fitted a cap from you several years ago...problem solved.....thought I had the same problem very recently, 'stat asking the scr, but no green light, so I bought another from you....has now stopped working again. How likely is it that the cap has failed so soon?
was desperate and had no heating watched this and decided to investigate the battery connection strips but all mine were intact and showing no sign of corrosion however when I opened up I could see two U shaped bits of plastic in the battery boxes and they fell out - hey presto it now works I guess these had been blocking the connection. I assume they did have a purpose as don't think I am up to soldering! Have contacted manufacturer also for advice. Must admit I have never liked this digistat and it can be temperamental much prefer the old fashioned call dial! THANKS DAVE
Hi Dave . Interesting video . i was wondering if the capacitor was my problem too. The heating and hot water will be working fine and all of a sudden , the program seems to switch over and works in the opposite mode. ie the water will come on when it should be off and goes off when I override it to come on. I have to turn it off at the mains and leave it half hour to reset it . Would that have anything to do with the capacitor ?
Excellent video, I think mine needs changing and have ordered the capacitor.
Already in an envelope and ready to post at lunch time, any problems drop me a message
David Williams Ahh you are the eBay seller I ordered it from.
We have a problem that the controller wont communicate unless right next to the box on the wall - is this the capacitor?
A note of warning that echoes Jim's below: despite being quite a handy DIYer usually, I had trouble getting the old capacitor out and, in trying to burn out the old solder, ended up burning part of the connection on the circuit board. I then had to get this repaired by a local computer repair shop.
I say this to warn you to take care with the circuit board. But Dave's service and advice has been excellent and, despite my problems, I now have the heating working again for £12 instead of the £180 it cost me this time last year (why these things fail so often is another matter).
Here are a few tips for you guys,
1) It might be easier to cut the legs of the old faulty capacitor next to the body of the capacitor, this way the only thing holding that leg in will be the solder on that leg, the capacitor is stuck to the PCB so this gives it another point of contact, work on one leg at a time.
2) This will sound silly but sometimes it is easier to ADD some solder to the joint, this way you can ensure the joint is hot enough and the soldering is flowing, it helps the existing solder melt thus helping you get the old leg(s) out.
3) Don't force it, it should come out without too much force, it is not coming out make sure the solder is hot enough and is flowing.
Good luck and enjoy your warm house once again
many thanks David, works a treat.
I have intermittent issues. But now it fails more than it works. The usual fix was to remove the batteries from the stat for a few seconds and put them back in again. This usually worked but it doesn't anymore. How do I test the unit? The stat also does not seem to be reading the correct temperature. I'm sure that it is reading low.
Thanks Dave
Worked like a charm in 3 and 1/2 minutes ;-)
What is the trick to be able to power up the gas central heating boiler whilst waiting to repair Drayton Digistat SCR please
I wired a "hard wired" thermostat into position. Black & grey wires in my boiler COM - N/O terminals or wires 3&5 to the thermostat while I waited for the spare part. 240v are on these contacts so be careful. You could probably use a light switch using these contacts but it won't be controlled.
Thanks for sending the component through. I soldered the new one in place but it did not help. The green light flashes on very quickly but won't stay on still. Heating still will not come on. Not sure if there is something wrong other than the SCR.
+steve wilson just sent you an email, the email address you used to pay for the replacement capacitor, lets see if we can work it out, I've already got a few ideas on what it might be
+David Williams Thanks David. Just sent you a reply :)
Great video, just purchased one of your capacitors. When you say isolate the electricity do you mean just flick the switch the SCR is running from or turn the electricity off from the fuse box? I assume either is safe?
Thanks, saved a load of money and nagging 👍🏼
Happy days dude. Nice work
Hi Dave, Just a quick question. I came across your site a few years back, very helpful. I ordered and replaced the capacitor and everything worked fine. The same prob has popped up again, green light- no hot water. Tried re-syncing just in case and that seems OK. Anyway, have ordered another capacitor. My question is, if that doesn't work this time round, do you sell the complete unit? Because if I have to buy one, I'd rather buy from a person like you who is so helpful.
Thanks, worked a treat. Pity I changed the motor in the zone valve first.
Brilliant... All done and working ...Thanks you.
Well I fitted the capacitor, fairly straightforward, I am now able to start the boiler with the override button but try as I might I cannot get the Digistat rfi to handshake with the scr, red light on, also with the boiler on, only the radiator next to the boiler gets warm and nor that warm either, all other rads stone cold, so it looks like more of a problem alas.
My digitstat SCR doesn't seem to be receiving a signal- Red light continuously on. When I press the over-ride button nothing happens, no clicks or anything. Batteries ok in sender unit (only a few weeks old), tried moving it closer to SCR- nothing happened, tried resetting learn-mode- again nothing happened. Is this a faulty capacitor in the SCR, or a faulty sender unit?
dave heaton hi Dave. Yes I have seen a failing capacitor give this fault. Generally the units don't have any real sync issues apart from the capacitor. In my experience I would definitely change the capacitor.
dave heaton I have exactly the same fault, so going to change the capacitor.
I have the same problem I’ve done all the things to pair up the thermostat, the red light flashes, green one fires up, but the unit is dead changed batteries nothing, I’m sure doing it on constant is not economical
Hi David,
My thermostat RC Plus thermostat has lost its connection to the WR1 receiver, with the receiver showing a solid green and red light- is this the same issue?
It could well be a capacitor fault. Always a good place to start. Or if you like send me a photo of the pcb and I can take a look at it for you. Dave
@@xxxxbigdavexxxx I've ordered a replacement part from you today, so will give this a try once it arrives. Thanks,
@@Synysterjmz did changing the capacitor solve your problem?
@@bisutommy79 it did indeed- thanks to your tutorial!
Does the scr need pairing back with the thermostat once the fix is complete? I just installed one of your capicitors, turned the boiler system back on but heating not firing up- even when over ride button is pressed. Cheers
normally the answer is no, after the capacitor change it will work as it did before, unfortunately Daniel needed more work doing to his unit after he changed the capacitor, all fixed up and returned to him, heard back from him saying all is good once again. :)
How do u take the receiver off of the wall in the first place? Mine is right next to the boiler with no obvious fixings in to the wall as well as a cable running in to the bottom of it. Many thanks
Hey Paddy, look on the underside of the unit, you will see 2 x silver flat head screws, slacken them off (no need to take them out) and the unit will hinge from the top, PLEASE INSURE YOU ISLOLATE THE SCR BEFORE REMOVING. the wiring plate will stay on the wall holding all your wires in place.
Hi Dave, Just about to purchase a capacitor from you on eBay, but need to know if the old British Gas WR1 is the same as the Dreyton SCR?
Yeap all the same , Drayton SCR, British Gas WR1 and Iflo are the same inside, thanks for looking me up
Hi David. I've looked for you on eBay but can't find you.
I've got a problem with my Drayton digistat scr and I was looking at your repair video.
My fault is that the heating has failed to come on so I've looked at the Drayton system. I've reset power to it as described in Drayton's instructions and when I return power no lights come on. If I press button 2 then no lights come on. If I press button 1 then the alarm light comes on. Nothing I do will make the boiler fire. But it will fire to heat the tap water in the tank.
Does this fault sound like it would be cured by your repair kit? And if so, how long would it take to get to me?
Thanks.
Hi Karlo
Yes I can fix this, on the ebay listing page there is my email address,
Search ebay for 'Drayton Repair Part'
Drop me an email and I will explain what has happened to your unit and should be able to fix it
Dave
Hi
Wonder if you can help, there is no lights on on my scr box, but there is power going to the boiler. Hope you can advise, many many thanks Andrew
yeap I have a fix for this. look me up on ebay. Do a search on ebay for 'drayton repair service'. from there drop me a message and I can show you what the issues are. Dave
my eBay user name is bearsy72
+David Williams Hi David just watched this clip 24 hrs too late. I have managed to get the circuit board off but have mutilated the plastic mounting and I'm hoping that you can supply a replacement along with a new Cap'. thanks billydean
Hi mate, drop me an email, I have some spare mouldings here, my email address is on my ebay listing page, username is bearsy72, speak soon
Happy Days, well done, enjoy ur warm house once again
@Minix Tvbox hi mate, yes I have the parts, look me up on ebay, and we can talk, my contact details are on there. Ta
Had red light showing all time ,no heat. got your capacitor & replaced, now blows 3a plug fuse about 5 seconds after overide pressed. Any thoughts please.
hi mate. send me some pictures of the pcb so I can take a look at it. maybe able to see something. use my email address shown on the listing page. sounds very strange
Hi David, I'm new to You Tube ,how do I get to your e-mail?
Hi David. I have similar symptoms with both my receivers but it's only intermittent - sometimes they work, often they don't. Is it still possible it could be the capacitors or is there something else likely to be going on?
+kit Hi Kit, yes the capacitors can fail in one of 2 ways, either they will straight fail and the heating will not come on even though it is showing a green light, or they can become intermittent and will occasionally fail, if it were my receiver I would deffo change the capacitor, it's a known weak spot in the circuit design and a very good place to start. Hope this helps. Dave
I have this exact problem, our heating does sometimes come on, could it still be a dodgy capacitor or might it be something else if it works sometimes?
Yeap the capacitor can cause intermittent switching. My guess is the capacitor is slowly breaking down, rather than the usual quick fail. Has to be worth a punt.
+David Williams thanks I will keep my fingers crossed, we are having the boiler serviced Friday as a precaution so if everything checks out then it is definitely the scr, I will order a capacitor in ready
+David Williams thanks so much, I replaced the capacitor and the heating is working again! a capacitor rated to higher voltage would probably stop it failing, however, they tend to be larger so might not fit in the case
Hi Dave do you sell complete scr? Theres no light/power ...I've changed fuse above it but still nothing😭
Hi Bev, sorry haven't got any new ones, but I fix dead units every day, repairs are done and returned same day if that helps
@@xxxxbigdavexxxx thanks for replying! I've just bought whole unit...as theres now no power showing on boiler at all ...so hopefully this will fix it quickly 😁
Look me up on ebay if you want it fixed, I am the seller bearsy72
My one doesnt seem to be reading the thermostat (digistat3) ...ıt seems to be overheating then the lights go out on the scr. Ive had to turn everything off from the mains til it cools down and then ı can get heating. I think ı need to replace a part on the wireless system but not sure which part?
Hi I would say you would need more than just the capacitor, please purchase the £17 option on eBay and send it to me, I can sort this for sure. Cheers Dave
@@xxxxbigdavexxxx thank you ı will message you further on ebay :)
Hi Dave, the capacitor I replaced 2 years ago seems to have failed. I looked for you on eBay to buy a replacement but couldn't find you. Are you still there???
hi mate. yes still about but oversea this week, back next Saturday, if you can hold out I will be relisting then. thanks for looking me up.
Hi Dave. I think I have the issue you mention: water heats up fine, no problem; but the heating doesn’t fire up - I.e. the green light comes on but no ‘click’ and no hot radiators!
I don’t have a soldering iron...and here comes thecsilly question (sorry)...does it have to be soldered? If so, if I got the new capacitor from you, who could I go up to fix it (I.e. would it be an electrician, is there a high street chain that could do it)?
Here’s hoping you can advise!
Thanks
Hi mate, not sure an electrician would be the right person, maybe a local computer repair shop could undertake the repair, or you could always send me the unit and I can repair / test it for you.
David Williams : Thanks, Dave. I’ve just ordered 2 capacitors from you as I’ve found someone local who can fit them for me. Fingers crossed it solves the problem. Thanks for your help.
do you know anything about the remote control device. my digital screen was blank, then a few parts of numbers showed but iy's quite unusable so cant put heating on
not had much to do with the sender units, they are normally bullet proof, think you can pick up cheap ones on ebay, any drayton digitstat should be okay, you will just need to pair it up with your receiver when you get it, your could have a dirty zebra strip on the back of the LCD or it could be a LCD on the way out, if it is a 2 drawer / 4 AA battery type unit, make sure the battery contacts are good and clean and tight, these older 2 drawer units can be a bit picking when it comes to the terminals, good luck, bell me if you need more help
Thanks Dave, I have given everything a good clean and made the terminals a bit more snug and hey presto the screen has returned to normal. Have seen one on ebay so will get a spare just in case
Keith Mitchell happy days, nice work
brilliant, thank you. wish I'd found this earlier!
you have the classic SCR failure there mate, low voltage on the relay coil is down to that 0.68uF X2 cap.
Hello I have watch your video and I have similar problem with one difference. My SCR click but hearing is not turned on. Can it be for same reason??
Thank you for your reply.
'Generally' if you hear the click then I would say the receiver is doing it's job, it sounds like it could be a boiler fault, you could bypass the receiver to confirm this but that would mean moving a wire on the back plate, before any wires are touched YOU MUST ENSURE THE POWER IS OFF TO BOTH the boiler and the receiver, I will say that again!!! Power OFF to BOTH devices before touching the wiring!!!!!!!!!!
David Williams
How to bypass receiver?
My wiring on brackets from left N-blue L-brown 1-brown wire loop to L 2-empty 3-yellow 4-empty.
Can’t find you on ebay ? Do you have a link changed your name ? :-(
a few ways to find me, either do an eBay search for the words; Drayton Digistat repair service, or look up seller called bearsy72 or you can try this link; www.ebay.co.uk/itm/DRAYTON-DIGISTAT-SCR-RF2-WIRELESS-RECEIVER-Repair-Service-capacitor-0-68uF/172820426361?hash=item283ce66e79:m:mrNF6CZvqUaen0hCdRiTBeQ hope this helps
Hi Dave, thank you for the great video. I have permanent red light on my scr. Is it still to do with faulty capacitor ?
Hi, So a solid constant red light means loss of sync between the room stat and SRC receiver, the room stats are pretty bullet proof and very very rarely fail in this way.Things to check, are the batteries ok in the room stat, also have you tried the re-syncing process, this process should be on the Drayton website, its all about holding down buttons and closing draws on room statsIf you have tried / checked the above then it's time to look at the SCR receiver, the capacitor can cause sync issues, it is definitely a good place to start, I am not saying it will fix all units with this type of fault but have seen it cause this fault.You could photo graph the PCB and send it to me, only need to see the rubber button side of the board, look me up on eBay and send me the photo I might be able to pick something upDave
Yes you were right it was due to the loose battery connection on the receiver. It is sorted now. Thank you very much for your advice.
Hi David, I think we need to buy a capacitor from you. I just want to check, since our SCR stopped working there are generally no lights on but sometimes when you turn the power switch on the red light does come on. When this does happen if you press the top button the green light flickers like its trying to click in but it won't. Does it sound like the capacitor to you or could there be more to it? Thanks!
Nikki Willis Hi Nikki, it could need a little more than just the capacitor. On my eBay listing page is my email address. Drop me a email and we can sort this. If I can get a photograph of the pcb both sides I might be able to show you what the issue might be. Cheers Dave
Hi again! We sent you an email with pics a couple of days ago, did you get it? Thanks x
I see you have already fixed it, but for other there are 2 screws on the bottom side of the SCR, NO NEED TO TAKE THEM ALL THE WAY OUT JUST LOOSEN THEM OFF,