bluescat
Well-Known Member
Hi guys: Cold bored and shut in, so I decided to try to troubleshoot a 2245 that died while playing at high volume. I was in another room when it died, so I don't know if anything dramatic happened, just quit hearing music!
I'm old and have no electronic experience, so be patient if you decide to help me: Thanks!!
After reading all the threads I could find on 2245/70's this is what I've done so far:
On P800 board:
Checked J801to ground=13.10v
Checked J802 to ground=34.7v
Checked between J802 & J803 and got -34.8 volts
On flipside of P800 (solder side) at relay
Checked yellow wire to ground = -35.8v
Checked blue wire to ground=0v
With power off; between yellow and blue wires=4.5 ohm
Power amps:
I pulled outputs 1 side at a time and checked to see if it came out of protection after pulling each side. Stayed in protection!
Reinstalled outputs and am back to square one.
Does what I have done so far tell you anything?
I'm old and have no electronic experience, so be patient if you decide to help me: Thanks!!
After reading all the threads I could find on 2245/70's this is what I've done so far:
On P800 board:
Checked J801to ground=13.10v
Checked J802 to ground=34.7v
Checked between J802 & J803 and got -34.8 volts
On flipside of P800 (solder side) at relay
Checked yellow wire to ground = -35.8v
Checked blue wire to ground=0v
With power off; between yellow and blue wires=4.5 ohm
Power amps:
I pulled outputs 1 side at a time and checked to see if it came out of protection after pulling each side. Stayed in protection!
Reinstalled outputs and am back to square one.
Does what I have done so far tell you anything?
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