RCA 46" projection T.V., M # P46921, CH # PTK195M1A.
Dead, 5 amp gma main fuse blown, horizontal output, drive, &
SCR regulator, all ok! Convergence power board is bad: Reg
IC STK 730-150 has a short between pins 4, & 5, & from
4, 5, to 8 & 9, as well as 10, & 11! I know pins 8, & 9, &
10, & 11 are internally shorted! R 19717, is 30 kohms, but
reads 32.14 kohms within spec? Do you guys, & gals "rebuild"
these modules, or just replace them? If so, do you find them to
be reliable? Most change them! Module is approx. $ 100.00
Canadian, & IC (STK 730-150), is approx. $ 12.00! Is STK
730-130, the same equivilent? I got the same price, then a different
price between the two, in two different suppliers! And no cross at
NTE, just for reference! This unit died while it was off, but plugged
in overnight, & just didn't come on the next day! This is a common
failure! Is there any point to "filter" the A.C. line supplying this pcb,
or,
the main board? Varistors across the line? Rono. Thanks.