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Old 31st May 2019, 03:32 AM   #1
itsikhefez is offline itsikhefez  United States
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TU-8600 Voltage Check
Default TU-8600 Voltage Check

Hey,

Just completed the TU-8600 and measured the voltages.
They are ~close~ for the most part, but have some variations across the board.
Some points that stand out are TP15-TP20, TP23-24, TP27-30
Is this expected?


I took the measurements right after power-on, so not too much warm up.
I don't have speakers yet but I'm listening to it with headphones and it sounds pretty good!
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Old 31st May 2019, 08:15 AM   #2
jan.didden is offline jan.didden  Europe
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There are always variations, especially with tube amps (I guess this is a tube amp). But what stands out are TP27, TP28, here the variations seems large. Without a circuit diagram, no idea what they represent though.

Jan
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Old 31st May 2019, 06:20 PM   #3
itsikhefez is offline itsikhefez  United States
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TU-8600 Voltage Check
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Originally Posted by jan.didden View Post
There are always variations, especially with tube amps (I guess this is a tube amp). But what stands out are TP27, TP28, here the variations seems large. Without a circuit diagram, no idea what they represent though.

Jan
Yes this is the 300B tube amp kit.
I spoke to Victor and he said that these values should be OK.

In case of interest, these specific test points are around the transistors.
(I hope its OK to post part of the circuit diagram here.. will take down if needed)
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