13" Sanyo tv model:31C460U,chassis:G2C-460uo,year:June 89

[[email protected]]

13" Sanyo tv model:31C460U,chassis:G2C-460uo,year:June 89.No power
up,has 5v micro,tact switches,IR receiver.
The relay coil is missing it's B+ as the SPMS power supply is dead,I
replaced the opto couplers but no luck.Anyone have any tips?.Thanks.

Sidney
Dartmouth,Nova Scotia
Canada

 

[Dave]

13" Sanyo tv model:31C460U,chassis:G2C-460uo,year:June 89.No power
up,has 5v micro,tact switches,IR receiver.
The relay coil is missing it's B+ as the SPMS power supply is dead,I
replaced the opto couplers but no luck.Anyone have any tips?.Thanks.

bad voltage regulator? Often there's just a couple of diodes and a reg to
give the req'd logic DC power.

bad caps?

Start measuring voltages at the AC line and see how far you get.