I’m out of my “tube amp” comfort zone here but, a very good freind asked if I could help him out. The amplifier is from a model 490 and the complaint was no sound left channel. I have been through the amp and found 2 blown fuses F3 and F4 which relate to the left channel and 1 shorted output transistor Q15. I know in 70’s Seeburg amps usually the drivers go with it and best to replace drivers and power transistors but in this case all others are fine, hoping someone who is familiar with this amplifier can tell me if there are any other components that would be taken out with this or if I’m good to replace the power transistor and fuses and go test? Also what transistor would replace Q15? Thanks for any suggestions, Mauro
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