Rca 9-pc-41
 

I'm in the process of restoring a 9-PC-41 projection TV. Started cleaning up the optics can, and discovered my CRT has some serious phosphor burn. Looks like I'll be looking for a replacement tube. Here are some pix of the set and the 5TP4.

You'd have to find a NOS one, as they're all darkened like that. There was no means of cooling, to avoid phosphor darkening.

The burn doesn't mean for sure it's bad, I have a TP400 from a Philco that's nearly as bad and it's still plenty bright, not NOS bright but useable.

Slowly making progress on the chassis restorations. I completed cleaning up and recapping the power supply and the audio chassis, and have started the RF/TV chassis. So far, the set has cleaned up amazingly well, and it doesn't look like there were many (or any) repairs to the set over its lifetime, so I'm hoping for an easy electrical restoration. The flyback transformer on the sweep chassis looks good, with no obvious visible damage, and the voltage tripler circuits all look good visually.

Rca 9 pc 41
 

I may be nuts, but I'm picking up one of these in mostly original condition later today for $25. Would you have a .pdf of the shematic that you could send to me at [email protected]? Any hints or tips of how to carefully take this beast apart would be appreciated.
Thanks,

Noah,

First, a moving warning.

If you have to lay the set on its back to transport it, then the CRT will have to be removed first or you will risk damaging it.

(The CRT can vibrate out of its cradle and scratch its face on the cradle. This happened to me on my parts set, but the CRT was not hurt.)

Shipping it in the normal upright condition, there is no problem with everything in place.

However, these sets are much MUCH easier to move it you remove the electronics first.

If your CRT looks as good as the one pictured in this thread, it probably is OK.


You can download a free Sams for this set at the ETF website:

http://www.earlytelevision.org/tv_sc..._diagrams.html

Be warned there are a lot of errors in Sams including the CRT mounting assembly.

Expect to find the many cable harness wiring rotten with age and some of the special plugs frozen in the sockets.

Take care not to damage the shielded HV cable.

The HV cable must be unsoldered from the bottom of the HV cage to remove the multiple chassis from the cabinet without damaging the HV cable.

If the cable is shorted, you can salvage the shielding by carefully removing it, to later insert a replacement cable.

James

I picked one up a few years ago. Its new old stock that was never sold. The knobs and all paperwork are stapled in the cabinet in a brown cardboard pouch. . All the tubes have cardboard shields on them. Still bolted to the original pallet. Not sure if I should restore it or leave it alone. Also the yoke and crt and the remote are in sealed boxes.too.

Now that is a sweet find. Can you post some photos?
I bet none of us have seen anything like that.

Carl

Agreed. That would be nice to see; actually more like documentation.

Its buried in the corner but will try sometime next week for you boys.

I've restored only one projection TV - a Philco 48-2500.
It was one of the most enjoyable restorations I've done.
I would think doing an RCA 9-PC-41 would be equally satisfying.
There was an RCA projection restoration I followed a couple years
ago that got me interested in these TVs.

What I would be interested in knowing was how well the projection TVs played when they were new.
I'm constantly tweaking mine trying to get the focus just so.

Carl

What did you use to clean the chassis?
Phil