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Technics SU VX-800 with blown components (another one)

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Thread Starter

alprampo

Joined May 29, 2026
52
MrChips said:
FNIRSI DSO152 oscilloscope is ok up to 40 V with a standard x1 probe. If you use a x10 probe, it is good to 400 V.
Yes, you can use the DMM to check the +60 and -60 V supplies on the collectors.
Click to expand...
SO, we have +63.6 V and -63.8 V on collectors of Q504 and Q506

this is the measurement on Emitter of Q506:
1791998950438.jpeg

Reading on Q506 Base:
1791999020878.jpeg

While Q504 Emitter:
1791999155001.png

And Base:
1791999111265.jpeg

Checking here and there on PCB, I found another pad gone, connecting the base of Q426 to R430 and E Q418
Could it be the actual cause?
I will test it tomorrow.
1792001840698.png

Thanks!
 
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