Dumont RA-103

[bandersen]

Not sure what you mean by grid emissions. Is there a G1 short? Have you tried to clear it?

You can sub a 12LP4, 12KP4, 12QP4 or 12RP4 but you'll have to change the HV connector.

[Davala]

I'm using my B&K 466 and on the G1 leakage test the needle pegs fully to the right.

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Matt Davala

[Davala]

I ended up trying to remove shorts at least 20 times. The G1 test would indicate good then randomly peg again. So I went between rejuvinate 1 and remove shorts over and over. I figured the tube is tired anyway.

Its been about 10 minutes now with the Dumont running and I now can actually go fully dark for the first time ever. Now I'm dreading moving the chassis back into the set in fear of jarring the CRT.

Thanks Bob for telling me to remove the G1 short. I completly misunderstood that test.
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Matt Davala

[Electronic M]

Originally Posted by bandersen

Not sure what you mean by grid emissions. Is there a G1 short? Have you tried to clear it?

You can sub a 12LP4, 12KP4, 12QP4 or 12RP4 but you'll have to change the HV connector.

Back fitment also changes as the 12LP4 at least is a bit longer and bulges the back out on the doghouse (mine has an LP4 so I know first hand).... It'll still fit but provides no protection for the CRT neck. One good slam against the wall and it's done.