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PROBLEM: B+ and other secondary voltages tends to go down after a few seconds.standby voltage of 5 volt is present. all components on the primary and secondary are ok.
maybe anyone could help why it would go to stndby.
tv-21st2
sorry for the late reply, thanks guys i appeciate your help..
i found out that the B+ diode was leaky(RU2), I tested it out of circuit.
Now the tv is working fine..:D
mc83a chasis, powers on then revert to stnby aftr 2-3 secs.
i've checked b+ (115v)and its ok .stnDby voltage is 5v..
what could be causing this problem, any help would be appreciated.
str-s6307
TV is dead at first, i've found out that B+ diode(UF5405) is short.i've also check for other short near the HOT section.after replacing the shorted diode i tested the unit but it only lasted for 5mins then the unit is dead again.now, str s6307 is shorted and fuse blackened.also B+...
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