B
Brad
Hi,
I don't service as many Sony TVs as other brands, but I can't remember the
last time I had to replace a FBT in a Sony TV. This set apparenty has a bad
FBT based on tests I performed and using a scope (ringing) with a loop around
the FBT core. The V reg (+135V) is good using a dummy load with an open trace
to FBT B+, but with "flyback" in circuit, the B+ is loaded down to around
+50V to +80V (pulsing). H.O.T. tested good out of circuit. Are FBT
failures common in this Sony model?
Thanks in advance, Brad
Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.
There is no such thing as a "secure" site.
I don't service as many Sony TVs as other brands, but I can't remember the
last time I had to replace a FBT in a Sony TV. This set apparenty has a bad
FBT based on tests I performed and using a scope (ringing) with a loop around
the FBT core. The V reg (+135V) is good using a dummy load with an open trace
to FBT B+, but with "flyback" in circuit, the B+ is loaded down to around
+50V to +80V (pulsing). H.O.T. tested good out of circuit. Are FBT
failures common in this Sony model?
Thanks in advance, Brad
Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.
There is no such thing as a "secure" site.