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You can see the service manual here: The problem is no audio from the right channel. Nursery Rhymes With Actions. The problem occurred aftera lightning-induced power surge so I assume that was the cause.

I expected to find bad output transistors but that was not the case. I believe the problem is not related to the protection circuit as I removed Q402 and disconnected 2 leads from Q418 (there is a brief description of the protection circuit on page 4 of the manual). With an audio signal connected, I can see the the signal at Q404 & Q412 matching the left channel. Van Morrison Bootleg Rapidshare. At Q406 & Q458 the signal is gone. Measuring some voltages I found Q420 to have -81V (E), -80V (B), +81V (C) compared to -6. Download Magix Samplitude Pro X2 Suite 13.1.3.176 Final Activation. 7V (E), -6.1V (B), -6.4V (C) for Q419 on the left channel. Also, the +/-1.2V on the collectors of Q422, Q426, Q424, & Q428 is not thereand I cannot figure out where it is supposed to come from. Note that the rail voltages measure about 80V as opposed to the ~58V shown on the print (that is only for the Japan model I think).

You can see the service manual here: The problem is no audio from the right channel. The problem occurred after a lightning-induced power surge so I assume that was the cause. I expected to find bad output transistors but that was not the case. I believe the problem is not related to the protection circuit as I removed Q402 and disconnected 2 leads from Q418 (there is a brief description of the protection circuit on page 4 of the manual).

With an audio signal connected, I can see the the signal at Q404 & Q412 matching the left channel. At Q406 & Q458 the signal is gone. Measuring some voltages I found Q420 to have -81V (E), -80V (B), +81V (C) compared to -6.7V (E), -6.1V (B), -6.4V (C) for Q419 on the left channel. Also, the +/-1.2V on the collectors of Q422, Q426, Q424, & Q428 is not there and I cannot figure out where it is supposed to come from.