Yamaha EL-70 Support Question
Yamaha EL-70 Support Question
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Question posted by Compufix on October 29th, 2020
El70 No Sound But All Lights And Features Working
I have no sound on EL70 but all voltages appear to be OK but on the PU board, R101 (FR) was open Circuit. R209 was running hot. I have the EL90 circuit diagram but there appears to be quite a difference on the EL70 PU board around the relays area, so it is quite difficult to troubleshoot. Any assistance would be great.
Current Answers
Answer #1: Posted by hzplj9 on October 29th, 2020 12:27 PM
hzplj9
Member since:
June 25th, 2012 Points: 4,874,710
Member since:
June 25th, 2012 Points: 4,874,710
If we could have a copy of the power supply circuit we may be able to advise the cause. Usually when a resistor goes open it is through over heating which implies a short circuit somewhere. Maybe the audio circuit has caused the failure.
If that is possible please raise another question with the relevant details.
Hope that helps.
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