Anyone have a 630ts, or clone of, parts chassis? I need the large 4", 6300 ohm
resistor found in the HV cage.
PM me.
thanks
pearsonk

Unless someone has one used to offer, the part is pretty much unobtainium. :(
You may try to make one via 3 power resistors 50w 5.3k +500 + 500, but the 5.3k in large sizes seem to be hard to find, closest I have found so far, is 5.6k, this may be close enough in this case.

HSA505K6J
THS50500RJ

Better yet use an adjustable one like this: https://www.mouser.com/ProductDetail/Ohmite/D25K7K0E?qs=VQbIUgX%252BSnOj57x9RYYOLg%3D%3D

Thanks for the tips. Hoping someone has a parts chassis I could get
one from. They were used in many sets mfg in late '40s......

Yes, they were, and are a high failure rate part. I think I've had to replace that resistor in every 40s Admiral chassis I've worked on.

Yes, they were, and are a high failure rate part. I think I've had to replace that resistor in every 40s Admiral chassis I've worked on.

what has me confused is, when I look at the RCA 630ts specs for the part, it says 20w, but when I look it up for my FADA it says 50w, did they just improve on the weakness of the 20w part?
and that's perhaps why my resistors have held up?

Yep, I have noticed several brands used 50w, others 20w....
A workaround is always possible...

https://www.elliottelectronicsupply.com/6300-ohm-6-3k-ohm-55-watt-power-resistor-4-inch-x-3-4-inch-mallory-rw35v632.html

Nice find. The original does have a couple taps though. I believe for adjusting width or linearity.

https://www.elliottelectronicsupply.com/6300-ohm-6-3k-ohm-55-watt-power-resistor-4-inch-x-3-4-inch-mallory-rw35v632.html

this one is incorrect :(

because it needs to have taps at 5.3k &500 &500 but the over all resistance is 6300.

http://suzaku.live-evil.org/lin-adj.jpg

Nice find. The original does have a couple taps though. I believe for adjusting width or linearity.

u beat me too it! :D

Thanks to MRjukebox160.
Perfect replacement as I need the full 6300..............
Mallory #RW35v632

IMHO, it would be unwise to use a fixed value for that resistor, as you would lose the ability to adjust horizontal linearity, for example, my FADA 895 has it tied to one of the center taps.

I didn't realise it had taps.

Here's a bad original. I believe it's that green corrosion that kills them.
https://live.staticflickr.com/8357/8427931609_30fd41cfce_z.jpg (https://flic.kr/p/dQKmrF)

You could get one of these
Mouser Part #
588-L25J3K5E
and one of these
Mouser Part #
588-D25K3K5E
And put them in series.

That is what I did for my CT-100 when I got rid of the gigantic
selenium rectifiers and used silicon and needed to adjust the series resistance. (However, I had them in the used parts box, used for years but still like new; they were and are superior parts.)

Here's a bad original. I believe it's that green corrosion that kills them.
https://live.staticflickr.com/8357/8427931609_30fd41cfce_z.jpg (https://flic.kr/p/dQKmrF)

and your horizontal output tube is decapitated!:yikes: