Hi! I just bought a Denon PMA 1060 in great condition.
Except one thing, its doesnt work.
When i bought it he said that he and his girl hade been
on vacation and it had been som thunder during the weekend.
So he went to the repairshop and they taught is was
a fuse that blown during a discharge.
I Found a fuse (placed near the on-off switch) that was
blown. So i replaced it.
Turned the Amp ON and BANG! Something broke.
(but the fuse is OK, maybe because i used another
type used more in cars, dont know, stupid me!)
A piece on one of the outputs had been blown away :S
(the one with the yellow wire on the downside of the
circuit board. (isnt it strange with a wire?? maybe it has
been repaired before, dont know)
One of the Caps also blown. (the brown one between the two
biasing pots) It came some stuff out of the cap, hard to see
on the picture.
And before i got the power cord out it starded glowing somewhere didnt have time to see exactly what part.
But i found that a GREEN
transistor is in very bad shape.
Nearly shattered in two. Hard to see but its the same picture
as the broken CAP.
The other channel seemes to be OK. I cant see any other damages, sure there is taught. The amp goes in protection i think, red light.
Now to the questions, can this be the result of a discharge
during thunder??
What should i check for? Is it some basic checklist to do?
Check all the outputs, and drivers.. I know.
But do i have to desolder ALL the transistors on the board
and check them, a very time consuming thing to do.
I dont think proffiesionals have the time to do that, but some people claim that its the only way to be sure.
Anmyone have schematic for the Amp?
Im greatfull for all the help i can get =)
Except one thing, its doesnt work.
When i bought it he said that he and his girl hade been
on vacation and it had been som thunder during the weekend.
So he went to the repairshop and they taught is was
a fuse that blown during a discharge.
I Found a fuse (placed near the on-off switch) that was
blown. So i replaced it.
Turned the Amp ON and BANG! Something broke.
(but the fuse is OK, maybe because i used another
type used more in cars, dont know, stupid me!)
A piece on one of the outputs had been blown away :S
(the one with the yellow wire on the downside of the
circuit board. (isnt it strange with a wire?? maybe it has
been repaired before, dont know)
One of the Caps also blown. (the brown one between the two
biasing pots) It came some stuff out of the cap, hard to see
on the picture.
And before i got the power cord out it starded glowing somewhere didnt have time to see exactly what part.
But i found that a GREEN
Nearly shattered in two. Hard to see but its the same picture
as the broken CAP.
The other channel seemes to be OK. I cant see any other damages, sure there is taught. The amp goes in protection i think, red light.
Now to the questions, can this be the result of a discharge
during thunder??
What should i check for? Is it some basic checklist to do?
Check all the outputs, and drivers.. I know.
But do i have to desolder ALL the transistors on the board
and check them, a very time consuming thing to do.
I dont think proffiesionals have the time to do that, but some people claim that its the only way to be sure.
Anmyone have schematic for the Amp?
Im greatfull for all the help i can get =)