Does any one have a schematic for a Healing Golden Voice 502C?

I should add that I have searched on the web and only found schematics for the 502E which is different unfortunately, I thought Healings were common as muck and it would be an easy task.

Healing model 502C is a AC/DC set.

Are we talking about the same

https://www.kevinchant.com/uploads/7/1/0/8/7108231/healing_502c.pdf

Thanks for reply.

Yes, I think its an AC/DC set with a 240V plug attached..No I haven't put power on the set yet.

Hmm, according to my search it uses

12SA7, 12SK7, 12SQ7, 50L6, 35Z5, 1954 - which would make it most likely AC/DC, live chassis. The 1954 is a barretter.

The tube heater voltages add up to around 123 volts, so I guess it's an adaption of an American design.

Unfortunately no schematic was found.

Thanks for reply Robbert,

I had a feeling that I would not find a schematic. It's odd that it has a mains plug attached and also valve 1954 is missing.

The 1954 valve has been replaced with a filament globe, so I assume the 1954 valve is a current regulator of some sort and probably rare as hens teeth.

With no tranny in sight I assumed it would be live chassis so I will be careful poking around.

I am just setting up a test bench in my shed, so the radio will have to wait.

Meanwhile I will continue searching for the schematics.

The schematic has been sent to Kevin Chant.

I’ll put the link on post #3 once Kev uploads it to his site.

Healing did (from memory) make US designed radios but they had to be made in Oz due to content rules at the time.

124V is possibly an import prior / during content rules prior to State Grids. The barretter may actually handle the 240V and that's why its there?

Either way, there is work to be done and the circuit analysed before even considering power. A Variac(tm) (aka Slide Regulator) may be handy.

It's odd that it has a mains plug attached

Does it have a resistance lead in the power cable to drop down to 110V?

By coincidence, this is referred to in the current, (no pun intended) issue of Silicon Chip, Serviceman section.

Harold

Thanks for replies...

I did look on Kevin chants site, does he have other schematics, its good news that someone is sending him the one I need. Thanks for sending the link.

The radio power cord has an Australian style plug, it has standard brown two core flex.

I have not yet checked resistance in the cord, I need to finish my work bench first, I have only done a quick visual check.

I have only heard about the American curtain burner cords, I would assume they would be a thicker than the ones we use in Australia.

John

John, I can send you a copy of the schematic while waiting for Kevin to upload it to his site.

My contact details are not hidden.

Link to schematic on post #3

Thanks MonochromeTV.

My contact details are also not hidden, So you can send by email if you wish.

John

MonochromeTv..

Oops, l missed the link at first...I have now down loaded the schematics from Kevin Chants site.

Thank you.

I just looked at schematic and although it says 502C, the valves appear incorrect.

Robbbert was correct with the valve line up?

Odd, it all looks good to me. Maybe it's been replaced since your post. (I used the link in post#3).

You'll need to replace all the paper caps as they'll be leaky to a dangerous degree.

C1, C4, C5, C6, C27 should all be mains-rated.

Be careful if you actually earth the E terminal - it might take out a circuit breaker in your switchboard. Make sure your aerial wire doesn't touch anybody or any un-isolated metalwork.

If it isn't crystal clear already, be incredibly careful while working on this set. It's a death trap - or could be.