Repair of my 1978 Pye CT450 Philips G11 chassis TV. VRAT Forum: www.radios-tv.co.uk/community/ Thread on VRAT about this very repair: www.radios-tv.co.uk/community...
Great watching this as I have one of these old sets somewhere and will have to get it out. Good to see you pointing out the faults and seeing the components changed. The great days of british tv manufacture and a world leader. Nigel
I was told by the Original Philips Croydon Engineer s that originally the Frame chip TDA2600 was designed to have a ceramic chip holder to cope with the heat , however the Dutch Philips bosses changed it to a cheap plastic one to save a penny or two regret to say, after some time it gave numerous problems. The main Smoothing Cap on PSU PCB suffered with a intermittent arcing terminal this could cause so much arcing it blew the Line output stage ,EHT / Lopt Transformer and made a hole in the CRT , unbelievable damage . Even with it's problems it was a good popular Philips TV to Service but not as reliable as older models of TV in Philips range
Since making this video I've concluded that this too had suffered from the smoothing cap issue which someone had tried (and failed) to repair. Luckily the colour decoder chip and LT diodes took the hit rather than arcing through the tube neck. I've also replaced the smoothing capacitor with a modern Rubycon capacitor as it occurs to me that even the blue replacement was approaching 40 years old.
I remember well, the first time we got Philips and Pye G11 sets in at Curry's. The picture was very good and quite an improvement due to the new Mullard 20 AX tubes, that were slimmer, sharper and fewer convergence controls. These sets gave very little trouble in their first few years. Many of the sets I saw for repair only had dry joints around the line output stage and especially at the scan coil connection which was a flimsy plug and socket arrangement on the line stage pcb as I remember. We used to solder the wires straight onto the board. I used to call them the king of the dry joint. I remember talking a PYE set identical to this to a house where the customer had bought the first VCR our branch had sold, it was a Philips N 1700 , he was always complaining about unstable pictures on the video through his old TV which was a Rediffusion aerial version of their Mk 1 series. I was sent by the manager, to demonstrate that the VCR button on the PYE set, would give a stable picture. It was hoped that this would prove to him that the video was not faulty and that he might buy the set. He would not be told though, even though he could see the picture was now rock steady and his son was saying that the new set was much better, he just kept saying that his old set was the best TV in the world and nobody else knew what they were talking about. You can't help some people.
I'll bet he kept his N1700 long after everyone had started using VHS. Wonder how many video hire shops he yelled at because they didn't have Chariots of Fire on N1700?!
Fantastic result Wayne, I think that's one of the best pictures I've seen on a CT450. The tube looks like it has loads of life in it. Probably had a relaxing life, unlike my Granada badged Tandberg, which appears to have suffered from a very hard rental life. Look forward to your next escapade.
I used to do tv reapirs way back 1974 black and white valve jobbies ,right through transister colour british models. Moved onto computers (mainframes/desktops etc) i am now 67 and recently now working on led tv,s not quite the same but fun pity about the screens failing in such vast numbers quality issues.
This is a direct feed from TH-cam so it might be due to the original uploaded video. I have noticed since making this vid that the pincushion correction seems slightly out but I don't really want to start messing with it as otherwise I'm happy with it.
@@MegaWayneD It survived a trip in a removal van from Birmingham into Wales but after two or so years it finally died after making a strange noise (which wasn't a bang or a pop)
@@ICanPlayPiano I suspect it had the dreaded "green meanie" capacitors in the HT smoothing stage or possibly even the big red smoothing capacitor in the HT smoothing. Any of these failing could've caused the high voltage to go sky high and blow a hole in the neck of the CRT. Notice I change the green cylindrical capacitors in this video to blue TDK polypropylene caps.
Since your last comment to me I have been racking my memory to work out the intro music to this video WITHOUT I might add cheating by using Google. I originally thought it might have been a television station ident but I'm pretty good with those and nothing sprang up. And then it lightbulbed. Mitsubishi TVs advert jingle from the 80s!
@@ICanPlayPiano I think he was the very first news reader on Tyne Tees in 1959! He left to go to BBC Midlands in 1964. Here he is in 1981: th-cam.com/video/vKhW7aJyGnA/w-d-xo.html
I have a 22 inch Philips k30 set, a great clean television the picture is great in my opinion and the colour too! But it’s slightly tinted with green and when starting it up you can see a green picture and it does take time to for the colour to appear where the green is not really noticeable from a far when it comes to a black and white picture. I’m no television expert and I don’t know if it’s normal or not to happen for a television this age and from this make, could you help give me some advice on what I should do? As there is hardly any store that can deal with a set like mine
I don't have much experience with the K-series Philips chassis, but it sounds like a greyscale issue. On the neckboard there's usually three coloured adjustments, red green and blue. Adjusting the green should help, only make adjustments after the set has been on for over an hour. I recommend joining the VRAT forum too.
@@MegaWayneD thanks for the advice, I’ll give it a go when I have time, how should I adjust the green? Should I turn the set up and unplug it or leave it on after it has been on for over an hour?
Hello just to update you, I managed to adjust around with the green and just managed to get a good enough picture for both colour and black and white. Although you can still see a green picture when starting up the television, it instantly goes away when the set is warmed up and the colour appears more quicker than before.
I do go over this in another video. It's more likely because different ITV regions showed different programmes and as the G11 was good for picking up distant signals you could have say Thames on one ITV and ATV on another depending on where you are. People had been used to this with the old 405 line VHF system. There were some regional differences with BBC1 as well. Also, a lot of TVs had BBC1, BBC2, ITV1, ITV2 before Channel 4 was launched. My other video is here: th-cam.com/video/s55bRg9urvA/w-d-xo.htmlsi=kKMK2VsekY9BERea
@MegaWayneD ahhhh thought it could be either/or. I mean where I live in Yorkshire I was able to pick up YTV as normal but on thr tv in my bedroom it picked up Tyne tees despite living nowhere near that part of the country! I guess it would've been cool to live in a bordering itv region and basically getting a whole new channel for nothing where the schedule was almost completely different. Now we take this kind of stuff for granted.
@@whatamalikeweirdly enough I do mention being able to pick up Tyne Tees and Yorkshire in my other video! If you were nearer to North Yorkshire you could definitely pick up both. I could only get Tyne Tees where I lived in Newcastle at the time. Yeah, different ITV regions showed different programmes or may show a late night film etc that other regions wouldn't show. Yorkshire and Tyne Tees refused to show Tiswas for some reason.
@MegaWayneD well what's strange is that when I say I was nowhere near the TT region, i really mean it. Practically on the south/west yorkshire border and in fact could just about see emerly Moor from my house haha
3 หลายเดือนก่อน
Long live CRT tvs, I used repair flat screen tvs,crt different ball game,more knowledge very dangerous flyback,high voltage
The flat screen in my Son's room has just developed a weird jitter after it's been powered for about five minutes. I'm dreading looking at it. He's currently using his PS5 with a 14" portable CRT TV via an HDMI to composite adapter. I offered him a larger CRT TV but he's happy with that one.
Not really. Channel 4 started in 1982, four years after this set was made. In the UK in 1978 you had the choice of the original 1972 Philips N1500 VCR along with the Philips N1700 VCR released in 1978. Plus Sony's Betamax released in 1977 and the newly released VHS system. Up until Channel 4 being launched a lot of UK market TVs had "BBC1, BBC2, ITV1, ITV2, VCR" as the channels.
Onslow had a Fidelity, to reply to your original post! 😉 Del Boy in Only Fools and Horses had one of these, the scene where he spots Rodney's old band on Top of the Pops in particular.
![เจอประจำ ตอน พักเที่ยง [EP.32]](http://i.ytimg.com/vi/jvqk6uJoVks/mqdefault.jpg)
Great watching this as I have one of these old sets somewhere and will have to get it out. Good to see you pointing out the faults and seeing the components changed. The great days of british tv manufacture and a world leader. Nigel
I think the G11 is by far the nicest 1970s colour set to work on. I have a load of spares if you ever need any to get yours up and running.
-Wayne
I worked more than a few of those sets way back when. They were one of the better sets to work on.
I was told by the Original Philips Croydon Engineer s that originally the Frame chip TDA2600 was designed to have a ceramic chip holder to cope with the heat , however the Dutch Philips bosses changed it to a cheap plastic one to save a penny or two regret to say, after some time it gave numerous problems. The main Smoothing Cap on PSU PCB suffered with a intermittent arcing terminal this could cause so much arcing it blew the Line output stage ,EHT / Lopt Transformer and made a hole in the CRT , unbelievable damage . Even with it's problems it was a good popular Philips TV to Service but not as reliable as older models of TV in Philips range
Since making this video I've concluded that this too had suffered from the smoothing cap issue which someone had tried (and failed) to repair. Luckily the colour decoder chip and LT diodes took the hit rather than arcing through the tube neck.
I've also replaced the smoothing capacitor with a modern Rubycon capacitor as it occurs to me that even the blue replacement was approaching 40 years old.
I remember well, the first time we got Philips and Pye G11 sets in at Curry's. The picture was very good and quite an improvement due to the new Mullard 20 AX tubes, that were slimmer, sharper and fewer convergence controls. These sets gave very little trouble in their first few years. Many of the sets I saw for repair only had dry joints around the line output stage and especially at the scan coil connection which was a flimsy plug and socket arrangement on the line stage pcb as I remember. We used to solder the wires straight onto the board. I used to call them the king of the dry joint. I remember talking a PYE set identical to this to a house where the customer had bought the first VCR our branch had sold, it was a Philips N 1700 , he was always complaining about unstable pictures on the video through his old TV which was a Rediffusion aerial version of their Mk 1 series. I was sent by the manager, to demonstrate that the VCR button on the PYE set, would give a stable picture. It was hoped that this would prove to him that the video was not faulty and that he might buy the set. He would not be told though, even though he could see the picture was now rock steady and his son was saying that the new set was much better, he just kept saying that his old set was the best TV in the world and nobody else knew what they were talking about. You can't help some people.
I'll bet he kept his N1700 long after everyone had started using VHS. Wonder how many video hire shops he yelled at because they didn't have Chariots of Fire on N1700?!
Early adopters lol
@@MegaWayneD
Fantastic result Wayne, I think that's one of the best pictures I've seen on a CT450. The tube looks like it has loads of life in it. Probably had a relaxing life, unlike my Granada badged Tandberg, which appears to have suffered from a very hard rental life. Look forward to your next escapade.
Yeah, I do suspect this had a lot of issues early on in it's life and was retired.
I used to do tv reapirs way back 1974 black and white valve jobbies ,right through transister colour british models.
Moved onto computers (mainframes/desktops etc)
i am now 67 and recently now working on led tv,s not quite the same but fun pity about the screens failing in such vast numbers quality issues.
Love that set .my parents had that very similar set
Very good picture indeed
Looking at the testcard looks like the width is a bit wide
But the colours are superb
This is a direct feed from TH-cam so it might be due to the original uploaded video. I have noticed since making this vid that the pincushion correction seems slightly out but I don't really want to start messing with it as otherwise I'm happy with it.
@@MegaWayneD Check the East West coil first just in case it's is burnt
Was a common problem back in the day
Thanks
You did well there saving a G11 for posterity. A very popular set in it's day.
Great video for this old but excellent set
I really like the Shango reference at the end it was so funny 😂
Most of my TV repair videos have some reference to Shango066!
My Mum and Dads first colour TV, late 1978 after a near miss on Spot the ball! Can k ask how you generate the test cards?
They're all TH-cam videos! Search for "test card favourites" or "test card classics". They're fed from a modded PS3 via a VCR for the RF output.
Around 4.38 I was waiting for Jonathan Davis to appear.
Elon Musk is probably in there.
We had one of those sets but it had teletext (Ceefax/Oracle)
Yes! They had the cool "Teletext Ceefax Oracle" badge in the bottom left corner.
@@MegaWayneD It survived a trip in a removal van from Birmingham into Wales but after two or so years it finally died after making a strange noise (which wasn't a bang or a pop)
@@ICanPlayPiano I suspect it had the dreaded "green meanie" capacitors in the HT smoothing stage or possibly even the big red smoothing capacitor in the HT smoothing. Any of these failing could've caused the high voltage to go sky high and blow a hole in the neck of the CRT. Notice I change the green cylindrical capacitors in this video to blue TDK polypropylene caps.
Since your last comment to me I have been racking my memory to work out the intro music to this video WITHOUT I might add cheating by using Google. I originally thought it might have been a television station ident but I'm pretty good with those and nothing sprang up. And then it lightbulbed. Mitsubishi TVs advert jingle from the 80s!
Ooh... you were right the first time. It's a TV station ident! It was used from 1979 to 1988. My accent might give you a clue?
@@MegaWayneD Tyne Tees.... Of course. I am in ATV land but we didn't see much stuff from Tyne Tees apart from Razzmatazz with Alistair Pirrie
@@ICanPlayPiano Supergran, Highway, Get Fresh - the one with Gilbert the Alien (I was on that!) A few other Children's ITV shows and that's about it.
@@MegaWayneD I was forgetting the lovely Tom Coyne, who left BBC Midlands Today to move to the North East and join Tyne Tees
@@ICanPlayPiano I think he was the very first news reader on Tyne Tees in 1959! He left to go to BBC Midlands in 1964. Here he is in 1981: th-cam.com/video/vKhW7aJyGnA/w-d-xo.html
I have a 22 inch Philips k30 set, a great clean television the picture is great in my opinion and the colour too! But it’s slightly tinted with green and when starting it up you can see a green picture and it does take time to for the colour to appear where the green is not really noticeable from a far when it comes to a black and white picture. I’m no television expert and I don’t know if it’s normal or not to happen for a television this age and from this make, could you help give me some advice on what I should do? As there is hardly any store that can deal with a set like mine
I don't have much experience with the K-series Philips chassis, but it sounds like a greyscale issue. On the neckboard there's usually three coloured adjustments, red green and blue. Adjusting the green should help, only make adjustments after the set has been on for over an hour. I recommend joining the VRAT forum too.
@@MegaWayneD thanks for the advice, I’ll give it a go when I have time, how should I adjust the green? Should I turn the set up and unplug it or leave it on after it has been on for over an hour?
Hello just to update you, I managed to adjust around with the green and just managed to get a good enough picture for both colour and black and white. Although you can still see a green picture when starting up the television, it instantly goes away when the set is warmed up and the colour appears more quicker than before.
@@MegaWayneDtired crt
Hi Wayne, is that a 20 inch Pye you have?
No, 22". The 20" versions seem really rare now. The 20" tube had the anode cap on the side.
How come there's 2 lots of buttons that both say bbc1 and itv? Was this a dual standard set?
I do go over this in another video. It's more likely because different ITV regions showed different programmes and as the G11 was good for picking up distant signals you could have say Thames on one ITV and ATV on another depending on where you are. People had been used to this with the old 405 line VHF system. There were some regional differences with BBC1 as well. Also, a lot of TVs had BBC1, BBC2, ITV1, ITV2 before Channel 4 was launched. My other video is here: th-cam.com/video/s55bRg9urvA/w-d-xo.htmlsi=kKMK2VsekY9BERea
@MegaWayneD ahhhh thought it could be either/or. I mean where I live in Yorkshire I was able to pick up YTV as normal but on thr tv in my bedroom it picked up Tyne tees despite living nowhere near that part of the country!
I guess it would've been cool to live in a bordering itv region and basically getting a whole new channel for nothing where the schedule was almost completely different. Now we take this kind of stuff for granted.
@@whatamalikeweirdly enough I do mention being able to pick up Tyne Tees and Yorkshire in my other video! If you were nearer to North Yorkshire you could definitely pick up both. I could only get Tyne Tees where I lived in Newcastle at the time.
Yeah, different ITV regions showed different programmes or may show a late night film etc that other regions wouldn't show. Yorkshire and Tyne Tees refused to show Tiswas for some reason.
@MegaWayneD well what's strange is that when I say I was nowhere near the TT region, i really mean it. Practically on the south/west yorkshire border and in fact could just about see emerly Moor from my house haha
Long live CRT tvs, I used repair flat screen tvs,crt different ball game,more knowledge very dangerous flyback,high voltage
The flat screen in my Son's room has just developed a weird jitter after it's been powered for about five minutes. I'm dreading looking at it. He's currently using his PS5 with a 14" portable CRT TV via an HDMI to composite adapter. I offered him a larger CRT TV but he's happy with that one.
@@MegaWayneD please explain the faults?
Odd that set has a button for VCR but not one for channel 4
Not really. Channel 4 started in 1982, four years after this set was made. In the UK in 1978 you had the choice of the original 1972 Philips N1500 VCR along with the Philips N1700 VCR released in 1978. Plus Sony's Betamax released in 1977 and the newly released VHS system.
Up until Channel 4 being launched a lot of UK market TVs had "BBC1, BBC2, ITV1, ITV2, VCR" as the channels.
The CRT still has a lot of life left in it.
Onslow had a Fidelity, to reply to your original post! 😉
Del Boy in Only Fools and Horses had one of these, the scene where he spots Rodney's old band on Top of the Pops in particular.
7:48 all that work and you're watching crap modern tv ;)
This is a very specific reference to @Shango066 as he often ends up with Crêpe Erase adverts on TVs he fixes.