What could Account for This? RCA 9TC-240 Power Issue

[Chris K]

Bob can you show a slightly broader picture of the WD so I can see where C190 should be? I have a 0.47 there but IDK if it's hooked up correctly. I will install C199 as shown

[bandersen]

C190 is about in the middle

[Chris K]

Did you download that from ETF? I plucked numerous service information packets off it and I don't have a wiring diagram that looks like your's.

[bandersen]

It's from Riders volume 4 which is a reprint of the RCA service manual.

[Chris K]

Originally Posted by bandersen

It's from Riders volume 4 which is a reprint of the RCA service manual.

Don't have it. OK I'll just have to check through the schematic carefully and track my work. Thanks

[bandersen]

What are you working from? Looks like original RCA service info. Is it for chassis KCS28 or 28A. Seems bizarre that RCA would publish two sets of service info with different part designators.

[Chris K]

This...and the Sams. My chassis says it's a KCS 28B-1

[bandersen]

Right that only covers KCS-28. Your chassis is a later revision from the following year.

[Chris K]

Just went for it. Looks OK...off center but OK

[Chris K]

Any idea Bob where I can buy and download Riders Television service volumes?

[bandersen]

Not sure. The guy who scanned them was selling DVDs on ebay for years. He had manual other manuals too at ke3gk.com

Could be he passed away?

Edit

Yep, Tom passed away a few years ago. Wonder what happened to all that scanned content?

[Chris K]

That would be quite a find. I looked on eBay and found a volume 4 in decent shape for $30 including shipping. Like you, most of my restoration likes are in the post-war era

[Yamamaya42]

Cool!

major step forward, now if you can get video to show up, that would be another step forward!

I don't see any adjustment for centering on the schematics, so it must be purely mechanical, and no doubt will come into play when the 10BP4 is in place.

[Penthode]

Originally Posted by Chris K

Just went for it. Looks OK...off center but OK

The picture is off center because the CRT is unsupported. Support the tube with a wooden frame or some books or something ensure the neck is centered in the focus coil and it will be much better.

[bandersen]

Looks like he has a clamp on the CRT neck. I do the same.
Centering is mechanical by manipulating the focus coil. Do you still have it mounted? It will throw the 5AXP4 image off considerably.