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Old 12-25-2017, 09:36 AM   #1
Flaviocb22
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Default Problem on YAMAHA RX-V379 receiver

Hi guys,
i'm new on the forum. Recently i bought a Yamaha Rx-V379 receiver. Yesterday i was playng some game and suddenly the receiver turns off appearing CHECK SP WIRES. I turn on again with the protect bypass procedure and appears DC- PRT 000L. Consulting the rx v377 service manual (i think its almost the same schematics as the V379) it says the this is caused by an abnormal DC on power amplifier. The 000l says that no current is been measured at pin 141 of IC. I went to self diagnosis menu and it says that on DC is 000 when it should be between 058 - 088. But the other stuff like PS, USb, etc are all on normal range Any tips what could cause this? I'm suspecting on a output transistor but anyone of you have similar problem?
PS: sorry about english. I'm brazillian.
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Old 12-26-2017, 05:48 AM   #2
Flaviocb22
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Default Re: Problem on YAMAHA RX-V379 receiver

any help?
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Old 12-27-2017, 09:13 AM   #3
mmartell
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Default Re: Problem on YAMAHA RX-V379 receiver

So check the output transistors for shorts. Just use a meter on them without removing.
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