I have a problem with this amp. The right channel is dead, and the thermal protection led is lit. There is scratchy noise from the right channel when the volume of the preamp is cranked up.
I have removed the covers, and I am now taking voltage readings. There is no bias voltage on the right channel, regardless of where the pot is turned. The power supply circuit to the right channel appears to be ok.
Does anyone have any experience, suggestions or pointers to help me narrow down the culprit(s)? Thanks.
I have removed the covers, and I am now taking voltage readings. There is no bias voltage on the right channel, regardless of where the pot is turned. The power supply circuit to the right channel appears to be ok.
Does anyone have any experience, suggestions or pointers to help me narrow down the culprit(s)? Thanks.
Here are the schematics. They are too big to attach within this post.
http://nekhbet.com/schema_535II_1.jpg
http://nekhbet.com/schema_535II_2.jpg
http://nekhbet.com/schema_535II_1.jpg
http://nekhbet.com/schema_535II_2.jpg
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.