Product is only 4 years old, she claims one day it stopped working during maybe a power surge.
Took some photos and posted here
[ http://www.mediafire.com/folder/r18udgcgvz1ua/26OEM021 ]
Shows thermistor which mounts above the heater blower motor, seems to have checked ok, and shows diagram of pcb connectors
and picture of the single PCB which has a smps built into it. I replaced the 8 pin smps IC, a THX203H I guess an exclusive Chinese made
device. Installed it, no help.I'm assuming its not defective from stock. Had to purchase (10) pcs, so
I guess thats always something to not overrule. No service info available from what I can tell.
Other Tech says usually a TCO (thermal cutoff switch) goes bad on these, but I could not locate one anywhere on the chassis.
The electrolytic caps looked not to have leaked any electrolyte and I think I remember testing them ok. Resoldered some connections
on the pcb just to be sure, and there is a fuse which read low ohms, so I figured it was ok. Sorta of has me stumped....