Hello Everyone,
Greetings!
It has been very long time that I opened up my garage again because I got something that I could not stop myself and this time I have a Yamaha RX-A1020 super powerful (at least from inside structure 😉 ) AV receiver. When this unit came to me this Saturday it was full of dust and what not but the standby LED blinked when pressed and power relay clicked once but no display. It worked 3 times after normal reset like other Yamaha receivers and then again it had to be unplugged to get his behavior back. I opened everything and cleaned it up and re-assembled it again ( I checked the output transistor and the related section but it seemed to be fine, no shorts ) and it came back to the same state as before. After some more attempts of reset I think I damaged some thing big 😩. Now there is no led blink and nothing.
The power supply where it supplies +5 V and the GND to the digital PCB, is now shorted. I have dismantled the digital board out of the amplifier but it is still the same. I know VCC and GND shorts are too complex to resolve and requires great deal of patience to look into, BUT believing the members of this super forum, I am requesting your assistance in getting moved on.
If anyone could PLEASE guide me, where to being with I would appreciate that. This is the first time that I have opened up this complex looking receiver and I look forward for your help.
The schematic is here: https://elektrotanya.com/yamaha_rx-a.../download.html
If you need any more details, please let me know. I can provide more inputs as I can.
Thank you so much for reading this post.
Regards,
Hemant
Greetings!
It has been very long time that I opened up my garage again because I got something that I could not stop myself and this time I have a Yamaha RX-A1020 super powerful (at least from inside structure 😉 ) AV receiver. When this unit came to me this Saturday it was full of dust and what not but the standby LED blinked when pressed and power relay clicked once but no display. It worked 3 times after normal reset like other Yamaha receivers and then again it had to be unplugged to get his behavior back. I opened everything and cleaned it up and re-assembled it again ( I checked the output transistor and the related section but it seemed to be fine, no shorts ) and it came back to the same state as before. After some more attempts of reset I think I damaged some thing big 😩. Now there is no led blink and nothing.
The power supply where it supplies +5 V and the GND to the digital PCB, is now shorted. I have dismantled the digital board out of the amplifier but it is still the same. I know VCC and GND shorts are too complex to resolve and requires great deal of patience to look into, BUT believing the members of this super forum, I am requesting your assistance in getting moved on.
If anyone could PLEASE guide me, where to being with I would appreciate that. This is the first time that I have opened up this complex looking receiver and I look forward for your help.
The schematic is here: https://elektrotanya.com/yamaha_rx-a.../download.html
If you need any more details, please let me know. I can provide more inputs as I can.
Thank you so much for reading this post.
Regards,
Hemant
