Hi everyone,

My name's Pat, I'm a new member. I've recently got hold of a Palmer TRG3P television from ~1963, there was a chassis layout diagram on the fibreboard panel from the back of the TV but the paper has perished and flaked off.
From what I could find in these forums, it's the same chassis as a KG Harris TV.

Does anyone have a copy of the chassis layout or schematic for a KGH 1.04 chassis?
The layout looks very similar to the 1.07 chassis in this post (https://vintage-radio.com.au/default.asp?f=6&th=261&offset=1), so the schematic is probably similar enough to work out the rest, but if anyone has a copy of the 1.04 it'd be much appreciated

Cheers
Pat

Don't think I ever saw a circuit of the 1.04, just a series of modification sheets that detail the progression from the 1.01.

The 1.07 was basically a fixup of the earlier chassis (they pulled too much out and had to put it back!)

So the 1.07 would be a good basis to work on.

Does your set have a 6Y9 as the video output? 6GV8 in the vertical?

You really need to fit the stabilised hor OP circuit as per the 1.01 circuit (which I do have) because the Philips NT3102 line transformer is at risk of failure otherwise and you probably won't find another one. In any case, make sure the B+Boost voltage does not exceed 610 volts WRT B+.

Do you intend to restore it to fully working condition?

That's great, thank you

I'm away from home at the moment, I'll have to cross check the 1.07 schematic against the chassis when I get back. I got it as a chassis with components in situ, but all the valves pulled out.
I don't have the CRT or the rest of the cabinet, so I'm planning to turn it into a valve theremin with an inbuilt amplifier, then make a cabinet for it in the style of an old radio or Rockmore theremin.

Better than a fish tank.
JJ

LOL!
Although a fish tank would make all sorts of cool semi-random "woo"s and "weeeeoooo"s as they move around near the antennae

If you are doing that, consider selling me the line transformer, you won't need it!

Can do! I was about to ask which one that is, and then I found the part of the schematic that I was overlooking.
It's the super high voltage transformer that has a connection to the cap of V10, correct?
I was thinking about turning it into a plasma speaker, either as an audio device or as a version of the Plasma Drive effects pedal that' made by Gamechanger Audio. I've got plenty of projects on the list already, though, and performance as an audio device is probably not great.

I've found schematics for the 1/07 chassis and the 1/06 chassis, too, so sharing here for anyone else that's searching. I'll post them up at Radiomuseum.org once my login details arrive in the mail

1/07 schematic:
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://vintage-radio.com.au/docs/kgh-1-07-circuit-diagram.pdf

1/06 schematic:
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.kevinchant.com/uploads/7/1/0/8/7108231/1-06_tv_rc1p_remote_[f].pdf

The 1/06 schematic is clearer/easier to read than the 1/07 in the link above

Yes, that transformer will allow another old TV to live again. It can be fitted to a wide variety of chassis (I put one in my Pye T18 recently).

My email is unhidden.

Good stuff, I'll be in touch soon (I'm travelling for the next couple of weeks)

Patricks,

I'd strongly advise against posting those schematics to Radiomuseum.

You may only submit schematics you've scanned yourself from your own material.

There is a serious risk of having your membership revoked if caught.