Paramount eats tubes

Aural Robert · 4685

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Offline Paul Joppa

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Reply #15 on: April 12, 2016, 09:50:28 AM
I think those are acceptable. The 8.2K depends on the setting of the trimmer on the board, so you can expect some variation. I have a dim memory of the 130K/250K error but I can't find the reference. However, since it worked before, I think it's safe to fire it up and check the voltages - keeping a weather eye for smoke!

Paul Joppa


Offline Aural Robert

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Reply #16 on: April 12, 2016, 04:59:11 PM
Looking much better. It blew the 1A, so I put in a 1.5A and it held. Then I put the 2A3 in and it held, and all the tubes light up.

I ran my voltages and most are within 5% or so, except for A3 - the manual reads 217 and I get 151 (152.3 with my other 2A3).

Also Kreg A is supposed to be 4.1 and I read 2.93, Kreg B should be 6.3 and I get 7.07.

So how is this looking? Thanks.

Aural Robert.

Origin Live Calypso TT w String Theory arm & Shure V15VxMR, Eros or BH DAC -> BeePre -> MonAmor 2A3s w JJ's => Blumestein Bamboo Tritons on Blumenstein Bamboo stands, AND Enhanced SEX w Sexy spkrs and subs in the WAF zone. DIY Belden 89259 w Eichmann interconnects throughout


Offline Paul Joppa

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Reply #17 on: April 12, 2016, 06:09:28 PM
That's way better than I feared!

Don't worry about the kreg voltages, they are pretty variable and those are within a reasonable range.

A3 should be 1/3 of A2 (the manual is incorrect); you are probably close to that, and if not that's why there is a trimpot on the PC board. See the manual for details.

Paul Joppa