This set came in with the complaint that it would intermittently shut
off. I plugged it in and heard no chirp from the power supply. It would
not power up. I found three suspicious things that I would like to ask
about. First there are two burnt resistors. One is marked R060V and is
on top of the pincushion board. It reads 2 ohms. The other is marked
R124V and it is connected between pins 8 and 9 of the regulator,(which
are connected together), and ground. This one reads .50 ohms. Could
someone please tell me what the correct values of these resistors are?
Also any theorys on the reasons for their oerheating would be
appreciated as well.
I also pulled the regulator which is an STK730-150. I have an
STK730-020 in stock which seems to be similar. Are they similar enough
to interchange? And if not might they be similar enough to take
comparison resistance readings between the two? If so there are
definitly some shorted pins on the 150 from the set. I plan on ordering
the 150 anyway but am I on the right track in my assumptions or should
I also be looking at other things as well. Any help will be most
sincerely appreciated. Lenny Stein, Barlen Electronics.
RCA TV model F35673MB, CH. CTC87CL3 BW dead set