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-   -   TS18A schematic (http://www.videokarma.org/showthread.php?t=277324)

mstaton 05-23-2025 11:34 PM

TS18A schematic
 
Looking for a copy or original TS18A schematic. I have the Sams but it’s not really close to being right. Set is a 9T1. Thanks

bandersen 05-24-2025 10:41 AM

Here's a schematic from the Wallace Telaide.
https://flic.kr/p/2r6HipB

mstaton 05-24-2025 05:13 PM

Thanks Bob. The only issue I see is that my horizontal transformer had 6 wires. I only seem to find ones with 4. Mine is attached to the outside of the chassis

bandersen 05-24-2025 06:23 PM

I have several TS-18A chassis and all have it mounted on the inside with four wires. Could yours be a replacement?

bandersen 05-24-2025 06:26 PM

Scratch that comment. I do have one like you described. https://flic.kr/p/bDAkFZ

mstaton 05-24-2025 06:49 PM

That’s the one

mstaton 05-25-2025 10:39 PM

If you have a schematic, I’d be happy to pay you for it.

bandersen 05-26-2025 11:00 AM

Nope, not that I can find. I went through Wallace and Riders. Neither has a TS-18A "late" schematic.

mstaton 05-26-2025 06:04 PM

Thanks for trying

mstaton 06-08-2025 04:21 PM

Will low high voltage (3.5k) affect sync. I tried different (used 1B3’s) some kinda work, some don’t. Still has the original Motorola 1B3. BTW, I ordered some new ones in case

bandersen 06-08-2025 04:34 PM

It might affect vertical sync since the plate voltage for the 6SL7 vertical output tube is derived from the HV supply.

You probably know you need to slide the feedback coil around the 1B3 to find the sweet spot that gives the best HV.

mstaton 06-08-2025 04:38 PM

I tried that, no luck

timmy 06-09-2025 04:14 PM

Quote:

Originally Posted by mstaton (Post 3263955)
I tried that, no luck

Low hv, change those domino looking micas and there’s one on the hv coil

mstaton 06-09-2025 06:15 PM

Okay

mstaton 06-21-2025 09:22 PM

Sad news, the CRT filament went open. I’m pulling all the caps and moving on. Too bad because the cabinet is very good.


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