Anyone have it?
I’ve looked at multiple service manuals and schematics but they’ve all be pre MkIII and are of no use, unfortunately.
Any help would be greatly appreciated.
I’ve looked at multiple service manuals and schematics but they’ve all be pre MkIII and are of no use, unfortunately.
Any help would be greatly appreciated.
I don't have one. What seems to be wrong with it?
Did you check power supply, voltages alright?
A chip amp inside?
Did you check power supply, voltages alright?
A chip amp inside?
The problem is the isolated section of the power supply isn’t producing 24v, barely 8v.
I thought I’d been pretty methodical in my diagnosis and with it being a fairly simple design, I’m pretty sure the problem is staring at me.
The main power supply is isolated through 3 octocouplers, there are 2 that seem to power the crossover and preamp sections and they seem to be putting out the correct voltage (from what I can see) but the 24v required for the output stage just doesn’t exist, just 8-10v.
Hope this makes sense.
I thought I’d been pretty methodical in my diagnosis and with it being a fairly simple design, I’m pretty sure the problem is staring at me.
The main power supply is isolated through 3 octocouplers, there are 2 that seem to power the crossover and preamp sections and they seem to be putting out the correct voltage (from what I can see) but the 24v required for the output stage just doesn’t exist, just 8-10v.
Hope this makes sense.
