Cleaned up my Xenon the other day, including vacuuming out the cab. It has been flawless for over 5 years, now the machine won't boot, the sound board puts out a howl, and the displays flicker very weak.
Xenon has the power module/ rectifier board in the lower cabinet.
My high voltage DC circuit @ test point 2 is only putting out 152 volts instead of the 220 it is supposed to.
All other test points are good.
I have done the following:
- Checked and cleaned the F2 fuse and fuse holder. I have 0 resistance across the fuse solder joints, so both are good. Also checked the other fuses and test good.
- Tested the 4 Diodes and the resistor, test good. This circuit uses didoes instead of a bridge rectifier
- Tested continuity from both input pins on J5 to the single output pin on J4, multimeter shows 650 and 625 with the diode test, this is close to the individual tests on each of the diode (not sure what that means other than there is a drop in power)
- Visually inspected the transformer and wiring and cannot see anything. The two red input wires are from the input side of the transformer/power line. Can I test these before plugging back in to the power board? Where do I ground them to get a good AC reading?
I am at a loss for what to do at this point. I assume the issue is the high voltage circuit, but any suggestions or help is appreciated.