Thanks Peter! I received an HW-12A for Christmas back when I was 16 and pieced together a PS for it from surplus, so I'm really looking forward to watching your restoration. I've enjoyed and learned from all of your videos and appreciate all the effort that goes into them.
Brilliant!!! Thank you so much for making these videos, and a huge thank you for this one in particular! I have a HW-101 that I bought nonworking back in college. I spent a long time going through it trying to repair it, found a burned out resistor, replaced it, and it immediately burned out again. My knowledge back then was not nearly as good as now, and that was long before I watched all of your repair videos! I'm excited to give it another try and watching you go through a similar radio will certainly help. I absolutely love your videos and I've learned so much. Thank you so much for spending your valuable time with us here :)
Peter, great way to start my new year. Heathkit is still my favorite. The switch and headphone jack on the SB-600 is not heathkit, someone added them. I am restoring a HW-100, HP-23 power supply and SB-600, I have many Heathkit items I am working on. The 125mf caps in my power supply had very little leakage for their age, but they got replaced along with the three caps underneath.
I built many kits from Heathkit in the past and they would never mount a power switch with audio cable. That was a homebrew modification, and a dangerous one at that. Looking forward to the next installment. Thanks for the video Peter.
I think you are right. Plus that lamp cord stuffed in the grommet with the other cable and snaked between the inner and outer chassis would never be done by Heathkit. It looks amateurish, plus did he say it had a few hundred volts on it? Never.
Heathkit was a unique company that provided good quality electronic kits that can be built and put to good use by hobbyists. I've seen many of their great products ranging from lab instruments to radios or clocks, being restored or repaired nowadays on tech channels on TH-cam. Unfortunately when they were most active, it was a different world (no internet, no online purchases with a credit card etc.) and since they were based in the USA, it was almost impossible for us non-US people to get a hold of their products. They stopped production almost a decade before all those things changed. Nothing like these kits ever became available to hobbyists after that. I hear they are back now, but judging by their current web site, seems like they have a long way to go back to their glory days. I wish you a happy new year Peter, and thanks for the video!
Very interesting. I have a HW-22A that I built in 1968. Still works but output is very low. I need to probably get new tubes, but will be interested is what kind of RF voltages you measure going through the transmitter section.
Hi Peter what an excellent video to start 2022. I don’t think I would have the patience like you have do I know what you’re doing with the power supply. After you get through with the radio it’s gonna be even better then when it came out of the factory. May you have a very prosperous and happy new year. Thank you for sharing the video looking forward to the next one. WD5ENH Steve
Happy new year, Peter! That keyswitch is not original, but put in by a ham. It is a German "Marquardt" switch, I have at least one, and I believe there was only one type of key. Good luch with the "Hot Water 12"
I wish I had the means right now to get my Viking Messenger going. It's in good shape and I have a parts chassis to go with it, but I need to get a set of channel crystals for it before I can even consider trying to get it to work again. At least it hasn't been hacked for 10m; that would be a problem for me since I'm not a ham and I don't have that kind of discipline...
If it were my unit I would insist on replacing all the capacitors in that power supply! Probably also to change out the toggle switch. Yeah, I know that it will cost a bit, but that gear is worth it.
Gesundes Neues Jahr Peter , und das wir im neuen Jahr viele Interessante Fehler mit dir "gemeinsam" finden ... on the bench ... 73 , Maik DF7MR in Dessau
Videos from TRX Lab guarantee the best entertainment and training for the radio amateur ... Peter an expert in the repair business ... I've already had him repaired one of my transceivers ...hats off ... best 73s de DL6RDE / AA1KD, Charlie
@@danielhowiesr.2593 A few reasons. First, I had that same speaker. I don't recall an option during construction for that key switch or headset jack. Heathkit would not have included two grills: one without the extra holes and one with for the jack and switch. While the speaker cabinet could house the power supply many just had the speaker as not all rigs used an external supply. Second, the holes are not drilled in the same place on each side of the grill. They are off just a little. Looks like the holes were made by hand rather than done as part of a production run. Third, the white cord used for the switch. It looks like a line cord from a light duty appliance or lamp. It was also stuffed in the same grommet as the power cord. Heath would not have specified that as a method of construction.
when opening any kind of electronic gizmo, over 30 years old, change electrolytic capacitors before turning it on. over-analyzing them is waste of time ;)
Losses: Another source of losses could be the transformer:: Copper and iron losses; especially from those days when they used low quality iron. But 20W only in the transformer would heat it up so there is another source of losses as you showed us.
Let's hope that the transformer is fine because otherwise it really starts to become critical. What I can say so far is that the transformer did not even get warm a bit.. Thanks Stefan
I think the "wrong" connection of 250/300 V switches are made on purpose to avoid overvoltage as the HW 12 manual says that DC B + is 250V and not 300V. Just my 2¢
No matter how cheap or expensive the capacitors are a device that old he would replace them all because the damage they can cause especially if it could possibly cause a transformer to burn out that is nearly irreplaceable or extremely expensive A customer should not take that take that risk
Thanks Peter! I received an HW-12A for Christmas back when I was 16 and pieced together a PS for it from surplus, so I'm really looking forward to watching your restoration. I've enjoyed and learned from all of your videos and appreciate all the effort that goes into them.
Brilliant!!! Thank you so much for making these videos, and a huge thank you for this one in particular! I have a HW-101 that I bought nonworking back in college. I spent a long time going through it trying to repair it, found a burned out resistor, replaced it, and it immediately burned out again. My knowledge back then was not nearly as good as now, and that was long before I watched all of your repair videos! I'm excited to give it another try and watching you go through a similar radio will certainly help. I absolutely love your videos and I've learned so much. Thank you so much for spending your valuable time with us here :)
sounds good. good luck with your project!
Strararatstr at rt we especially want m
I just got my HW12a going. I added a Vernier to the vfo knob. Excellent.
Peter, great way to start my new year. Heathkit is still my favorite. The switch and headphone jack on the SB-600 is not heathkit, someone added them. I am restoring a HW-100, HP-23 power supply and SB-600, I have many Heathkit items I am working on. The 125mf caps in my power supply had very little leakage for their age, but they got replaced along with the three caps underneath.
Thanks for your contribution and for the hint!
Hi Peter, Happy New Year to you and Family. Great video, amazing that those two caps are okay after 60 years - Thank you 73
Happy New Year to you and yours! All the best Bob! 73
I built many kits from Heathkit in the past and they would never mount a power switch with audio cable. That was a homebrew modification, and a dangerous one at that. Looking forward to the next installment. Thanks for the video Peter.
Thanks for watching and thanks for the hint!
I think you are right. Plus that lamp cord stuffed in the grommet with the other cable and snaked between the inner and outer chassis would never be done by Heathkit. It looks amateurish, plus did he say it had a few hundred volts on it? Never.
Interesting restoration! Looking forward to part 2!
Thank you!
Love the look of vintage equipment. Nice set-up, great information thanks for sharing.
Thanks for watching
Heathkit was a unique company that provided good quality electronic kits that can be built and put to good use by hobbyists. I've seen many of their great products ranging from lab instruments to radios or clocks, being restored or repaired nowadays on tech channels on TH-cam. Unfortunately when they were most active, it was a different world (no internet, no online purchases with a credit card etc.) and since they were based in the USA, it was almost impossible for us non-US people to get a hold of their products. They stopped production almost a decade before all those things changed. Nothing like these kits ever became available to hobbyists after that. I hear they are back now, but judging by their current web site, seems like they have a long way to go back to their glory days. I wish you a happy new year Peter, and thanks for the video!
Oh interesting not heard yet that they are trying a relaunch ...
Happy New Year Peter! Thank you for a most interesting video, I'm looking forward to the next part.
Good to see you Alan! Happy New Year.
Happy New Year 2022, thank you for all the good work, 73!
Happy New Year!
Nice explanation of the faults and incorrect wiring. Thanks and Happy New Year Peter.
Thanks Bill and Happy New Year
Happy New Year Peter. I'll have to watch the rest of the video later; have some home repairs to do this morning.
Happy New Year
Happy New Year, Peter.
Well that's a nice project to start a new year.
I love these old Heathkit devices :-)
Happy New Year Bernd and stay safe..
What an interesting project. Thanks.
Thank you
Good troubleshooting nice explanation. Good Job thanks for sharing love Heathkit
Thank you
Happy New Year Peter! Thanks again for your work!
Happy new year
This is awesome im looking forward for part 2 :)
glad that you liked it
Waiting for the restoration ;)
Thanks again
Yes we all hope that we get green light
Looking forward to the next video! Thanks, Peter!
glad that you liked it
We love you man! looking forward to part 2
Thank you
Very interesting. I have a HW-22A that I built in 1968. Still works but output is very low. I need to probably get new tubes, but will be interested is what kind of RF voltages you measure going through the transmitter section.
sure but until we are at this point of the project it will take a while..
Hi Peter what an excellent video to start 2022. I don’t think I would have the patience like you have do I know what you’re doing with the power supply. After you get through with the radio it’s gonna be even better then when it came out of the factory. May you have a very prosperous and happy new year. Thank you for sharing the video looking forward to the next one.
WD5ENH
Steve
Thank you Steve and Happy new year. 73
Thank you for another nice video,, a 2 cupper this morning !!!
Thanks for watching this 2 cupper Ron :-)
Happy new year Peter. Great video as always.
Happy New Year Mike
Hello Mr funny man, good to see you here aswell :-)
Happy new year, Peter! That keyswitch is not original, but put in by a ham. It is a German "Marquardt" switch, I have at least one, and I believe there was only one type of key. Good luch with the "Hot Water 12"
Thanks for the Info! Happy New Year!
Old Tube radios! YES !!! Finally ! :)
LOL glad that you liked it.
Happy New Year Peter! This project I want to follow. It's a interesting one! Thank's a lot for sharing! The best from LB1NH in Oslo Norway.
Happy New year Arild! All the best and 73
Hi Peter,
Happy New Year. I hope you get the OK to repair the power supply so we can see if the HW-12 operates. Stay safe. 73 WJ3U
Hi Don.
Happy New Year Don! 73
Happy New Year, Peter!
Happy New Year ACE
I wish I had the means right now to get my Viking Messenger going. It's in good shape and I have a parts chassis to go with it, but I need to get a set of channel crystals for it before I can even consider trying to get it to work again. At least it hasn't been hacked for 10m; that would be a problem for me since I'm not a ham and I don't have that kind of discipline...
There are companies which are producing crystals on demand. I don't think that it would be easy to get some originals...
If it were my unit I would insist on replacing all the capacitors in that power supply! Probably also to change out the toggle switch. Yeah, I know that it will cost a bit, but that gear is worth it.
Yes we all hope that we get green light for moving forward..
Gesundes Neues Jahr Peter , und das wir im neuen Jahr viele Interessante Fehler mit dir "gemeinsam" finden ... on the bench ...
73 , Maik DF7MR in Dessau
Danke und Gutes neues Jahr Maik. Alles Gute und 73
Welcome back Pete
We were always here ;-)
Thanks Peter 👍🏻🇬🇧
Thank you
Great thank you...
Thank you!
Videos from TRX Lab guarantee the best entertainment and training for the radio amateur ... Peter an expert in the repair business ... I've already had him repaired one of my transceivers ...hats off ... best 73s de DL6RDE / AA1KD, Charlie
Thank you Charlie not too much of the honor..
@@TRXLab Peter ... honour to whom honour is due
Happy New Year 2022
Happy New Year!
Bad or dirty switch and just use clip leads on power harness
Leaky caps. The voltage doubler is falling down on the job. Cut 'em out and throw them away before they short and wreck your transformer.
whats happend with the trx........
still in waiting position...Time is very short ...
That key switch must have been added by the owner. I think the phones jack was added by the owner also.
Why?
@@danielhowiesr.2593 A few reasons. First, I had that same speaker. I don't recall an option during construction for that key switch or headset jack. Heathkit would not have included two grills: one without the extra holes and one with for the jack and switch. While the speaker cabinet could house the power supply many just had the speaker as not all rigs used an external supply. Second, the holes are not drilled in the same place on each side of the grill. They are off just a little. Looks like the holes were made by hand rather than done as part of a production run. Third, the white cord used for the switch. It looks like a line cord from a light duty appliance or lamp. It was also stuffed in the same grommet as the power cord. Heath would not have specified that as a method of construction.
@@w8rko470 What I meant was, why a key switch for a rig? Don't want the wife to use the rig while he is at work? ;-)
@@danielhowiesr.2593 Sorry about the confusion. My guess is he had kids and was afraid they might mess with the radio when he was gone.
Yeah fully agree Mike..Thank you
An real Funkgerät :-)
LOL
when opening any kind of electronic gizmo, over 30 years old, change electrolytic capacitors before turning it on. over-analyzing them is waste of time ;)
Losses: Another source of losses could be the transformer:: Copper and iron losses; especially from those days when they used low quality iron. But 20W only in the transformer would heat it up so there is another source of losses as you showed us.
Let's hope that the transformer is fine because otherwise it really starts to become critical. What I can say so far is that the transformer did not even get warm a bit.. Thanks Stefan
It's NOT serious, it's series! REPLACE ALL paper CAPs!!
Yes, unfortunately my tongue doesn't always do what it should...
@@TRXLab - That's OK!
I think the "wrong" connection of 250/300 V switches are made on purpose
to avoid overvoltage as the HW 12 manual says that DC B + is 250V and not 300V.
Just my 2¢
Very good hint Johan not only 2 cent!! Thank you have to check that out
Happy New Year.. vy 73 de DL1LEP
Happy New Year
😃👍
Danke Ulrich
Thanks so much TRX for your hard work and videos...wb7pnc
No matter how cheap or expensive the capacitors are a device that old he would replace them all because the damage they can cause especially if it could possibly cause a transformer to burn out that is nearly irreplaceable or extremely expensive A customer should not take that take that risk