Troubleshooting Kikusui COS5020 Oscilloscope


Joined Jun 22, 2012
Excuse me, the components C344 and its surroundings R357, 358, 359 are burned.

They will have their values just like R624 that this toast. and they will know why it will have burned. one day I just turned it on and took out sparks,
As per service manual..

R357,9 are 1K 5% 1/4W
R358 82 ohms 1/2W 5%
C344 47nF 100V

These are the bias resistors for Q310 to Q315, pg 82.
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