(HELP) Yamaha CR-820 blown lamps

[Boston Tom]

Hi All,
Just grabbed this CR-820 for short $$ but as I was doing a few voltage tests to see why lamps weren’t working found that I have .5v across L1-L4 saw that there is supposed to be close to 30v or so. Also the 12vdc test points are measuring 26.5VDC probably not connected.
Thanks for any help.
BT

 

[avionic]

.L2 and L3 will have zero volts AC if the lamps are burnt out.

L1 should read AC voltage -- 15-20VAC

L4 is chassis ground

The 4 lamps are wired parallel-series

 

[Boston Tom]

.L2 and L3 will have zero volts AC if the lamps are burnt out.

L1 should read AC voltage

L4 is chassis ground

Yes I get that. L1 to ground is at .5V AC trying to find the issue transformer is fine as are all applicable fuses.
Thanks

 

[avionic]

Yes I get that. L1 to ground is at .5V AC trying to find the issue transformer is fine as are all applicable fuses.
Thanks

Broken trace or bad solder connection on the PCB.. Measure the AC right off the transformer..Orange and blue wires on the secondary.