Those are voltage regulators. They're going to get hot quickly if they're not mounted to the heatsink. Clamp all transistors to the heatsink so you can troubleshoot the other problems.
Do you have positive and negative regulated voltage on the op-amps?
Do you have positive and negative rail voltage on the outputs?
Do you have audio on pins 1 and 7 of IC1801?
Do you have positive and negative regulated voltage on the op-amps?
Do you have positive and negative rail voltage on the outputs?
Do you have audio on pins 1 and 7 of IC1801?
Replaced both driver IC'S (2010S) Replaced all of the outputs.
If i stick the black probe on ground and red on either speaker terminal i get 13 volts on power up..
It i put the black probe on negative speaker terminal and red on the positive speaker terminal I get 0.26 volts when powering it up.
If i stick the black probe on ground and red on either speaker terminal i get 13 volts on power up..
It i put the black probe on negative speaker terminal and red on the positive speaker terminal I get 0.26 volts when powering it up.
It doesn't appear that the amp is producing rail voltage. Re-check it. If there is rail voltage, re-check the readings.
I post the lists so you can copy and paste them into they reply. They have all of the proper spaces to make it easier to read. Copying and pasting the lists will save time for you.
I post the lists so you can copy and paste them into they reply. They have all of the proper spaces to make it easier to read. Copying and pasting the lists will save time for you.
Hey mike what's the nature of your problem with your amp? I have the same amp and it recently crapped out on me and am about to try to fix it.
I also noticed that you guys had a thread back in november where you passed around a service manual for this amp (I emailed you about this, Perry). I would greatly appreciate it if one of you could PM me if you have it.
Thanks
I also noticed that you guys had a thread back in november where you passed around a service manual for this amp (I emailed you about this, Perry). I would greatly appreciate it if one of you could PM me if you have it.
Thanks
Both of the amps ive had here 1 is already back to the owner and the other one is still here.
Both amps had the same problem:
The outputs were defective (IRF540)
The driver IC'S were also defective (IR2010S) Board locations: IC9801 &
IC9802
I also had a bad diode in location: ZD4901 -- right in fron of the regulators.
Hope this helps to get you started
Both amps had the same problem:
The outputs were defective (IRF540)
The driver IC'S were also defective (IR2010S) Board locations: IC9801 &
IC9802
I also had a bad diode in location: ZD4901 -- right in fron of the regulators.
Hope this helps to get you started
I just sent another email, Perry. Check your spam box it might be in there.
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