1956 Sears 24" Suburbanite Combo

[Popester]

Chris, I want to revisit post #14. You seriously gave that a wash, I understand that it wasn't a pressure wash. But how can getting IF cans wet or the innards of transformers wet not do some type of permanent damage to those components?Spats Bear has a YouTube video of a Zenith Chromacolor chassis that he puts through a kitchen dishwasher. Never thought that you could wash electronics, not that I want to start, but it sure does clean things up. But what about the long term left on residual chemicals left on after doing a chemical rinse. Wouldn't that damage or shorten the life of a fragile IF transformer? Please elaborate, you got my attention now. Wow.

[old_tv_nut]

Standard procedure at Tektronix for refurbishing test gear included washing (as told to us at Zenith by the Tek rep). I don't know what kind of detergent may have been used, and would imagine that distilled or deionized water was used for final rinse.

[trinescope]

I think as long as the chemicals aren't too harsh and you get the equipment dried quickly there won't be a problem. The only time I had problems washing something was the chassis in a low end Curtis Mathes stereo console, and that was in the AM IF transformers which used the troublesome internal mica wafer capacitors, so they would have had problems anyway. I subbed in transformers from a junk radio chassis not knowing that I likely could have repaired the originals. Everything else on it worked OK, and I was able to get rid of the dirt and cigarette tar.

[Electronic M]

I've been known on chassis that smell moldy or are hideously dirty to spray them down with the garden hose in jet mode then sun dry... hasn't caused me any issues yet... granted I try to minimize aim at transformers.

[Crist Rigott]

Originally Posted by Popester

Chris, I want to revisit post #14. You seriously gave that a wash, I understand that it wasn't a pressure wash. But how can getting IF cans wet or the innards of transformers wet not do some type of permanent damage to those components?Spats Bear has a YouTube video of a Zenith Chromacolor chassis that he puts through a kitchen dishwasher. Never thought that you could wash electronics, not that I want to start, but it sure does clean things up. But what about the long term left on residual chemicals left on after doing a chemical rinse. Wouldn't that damage or shorten the life of a fragile IF transformer? Please elaborate, you got my attention now. Wow.

What do you mean by a "chemical rinse"?

[Crist Rigott]

Yesterday I tackled the yoke cover. Just the side of the yoke cover was in bad shape. the top and bottom were ok. After removing the cover, I chipped off the side and left the bottom.

I then made a new side using 1/32 plywood. After fabricating the new side, I soaked the outside using CA glue as a base for the primer. I sanded it then shot some primer on it.

Once dry I installed the new side and used some 5 minute epoxy to glue it to the bottom. Once dry, I then painted it gloss black.

[Popester]

Chris, what I meant by chemical rise is that usually at a car wash the final rinse isn’t just water. It’s water and some kind of a rinse agent. Whatever the rinse agent is what I meant. Buy the way that’s turning in to a very nice restoration.

[Crist Rigott]

Originally Posted by Popester

Chris, what I meant by chemical rise is that usually at a car wash the final rinse isn’t just water. It’s water and some kind of a rinse agent. Whatever the rinse agent is what I meant. Buy the way that’s turning in to a very nice restoration.

The final rinse is de-ionized water. "Spot Free" rinse at the car wash.

Thank you,

[Crist Rigott]

I aligned the chassis today. It went well and quick. This thing plays well. The chassis is as far as it will go till it is installed back into the cabibet and all the picture controls can be adjusted.

On to the radio. Still no documentation.

[Electronic M]

Originally Posted by Crist Rigott

I aligned the chassis today. It went well and quick. This thing plays well. The chassis is as far as it will go till it is installed back into the cabibet and all the picture controls can be adjusted.

On to the radio. Still no documentation.

On what appears to be an AA6 with PP audio like that as long as the values have not rubbed or burned off the components it is pretty easy to restore them without a schematic...Simple sets like that I often don't even bother to get a print while restoring (except for the occasional problem child).

[Crist Rigott]

Originally Posted by Electronic M

On what appears to be an AA6 with PP audio like that as long as the values have not rubbed or burned off the components it is pretty easy to restore them without a schematic...Simple sets like that I often don't even bother to get a print while restoring (except for the occasional problem child).

Yep, that's what I'm banking on. Stay tuned.

[mr_rye89]

Originally Posted by Crist Rigott

Today I continued to recap the chassis. This TV has a couplate for the Vertical Integrator. I remembered I made one up that seemed similar on another project. I checked my docs and sure enough it was identical. When I made the first one up, I made 2 boards. I dug around and found the second board. I then proceeded to make up a new V. I.

On those vertical integrator modules/PECs what type of capacitors are you using?

[Crist Rigott]

Originally Posted by mr_rye89

on those vertical integrator modules/pecs what type of capacitors are you using?

mlcc

[mr_rye89]

the vertical integrator in my TV calls for 1000pF and 2000pF capacitors, will subbing ceramics there screw anything up?

[Crist Rigott]

Originally Posted by mr_rye89

the vertical integrator in my TV calls for 1000pF and 2000pF capacitors, will subbing ceramics there screw anything up?

I don't know. Maybe someone with the electronics background can answer that question.