Please Help about a Yamaha DSP-A1

https://www.hifiengine.com/manual_library/yamaha/dsp-a1.shtml?_e_pi_=7%2CPAGE_ID10%2C1711428461

Can i connect a powered subwoofer to center channel pre-out connection inYamaha DSP-A1

Popped power supply hi sorry if you can't get it on trying to do a diagnostic won't matter if you can open the back check where the power is going into you will c a power supply board a cap has carrots on it check if any of them is popped up

My remote control got problems. It's hard to find another in my country (VietNam). So, would you kindly advise me which kinds of remote control I can use as a substitute (equivalent) for my YAMAHA DSP-A1 Receiver. Thank you for your support

Your EQ will be connected to the amp via one of the Tape loops. Connect rec out from the EQ to play in on the A1 Tape input,and rec out from the A1 to play in on the EQ. Then select Tape Monitor on the A1 to hear sound with the EQ settings applied. It won't affect the surround channels,only the main ones. You can also connect the EQ across the pre out and main in sockets for the front channel on the A1

In the manual it says switch off leave for 30 seconds and switch back on .

The display problem is because the solderings on the back of the display are broken. To fix it you have to open the amp and redo the solderings (there are about 50 or 60 of them). There is a Youtube video that shows how to do it. I have fixed this on my DSP-A1.
I also have the problem with the motorized volume control. I have tried cleaning it, and it works for a few days, then it's stuck again. I guess I will have to replace it to have it fixed permanently. The part number is VZ621400, a new one costs about 40$.

The A1 has an internal self diagnostic program which you can go through to find the fault. You can access the diagnostic program by simultaneously pushing some buttons on the front panel. The Yamaha service manual for the A1 tells how to do it and what the diagnostic codes mean. You can get a copy of the service manual on the web from several suppliers for a small fee.

i am no expert but i had simmilar problems and it turned out that some capacitors needed replacing