Hello,
Having a bit if a hard time with this toshiba. I have repaired this tv 3 times for the same issue. The symptoms of the tv are dead, no standby voltage. So let's start at the beginning of the story. First repair attempt, I replaced the open cement fuseable resistor r850, and q880 which is str-y6456 ( was not shorted). Sent the tv back to the customer, tv ran for about a 2 weeks. Tv came back. Same r850 fuseable resistor was open. This time I ordered a repair kit, which came with r850, bridge rectifier d820, and 2 47ohm resistors at r827, r828 ( which are running hot as the board has browned near them but they show 47ohm still. Tv ran for about 5 days this time, and back with the same r850 resistor open. There are no shorted mosfets. My only thought is maybe the 2 150uf 450v caps.
So main question, what can cause this fuseable 1.8ohm resistor to keep opening?
I have 3 more of these TVs in my shop right now with the same issue, and I'm hesitant to send them home. I've let them run here for over 48 hours now strait with no issue.
Any help would be appreciated.
Having a bit if a hard time with this toshiba. I have repaired this tv 3 times for the same issue. The symptoms of the tv are dead, no standby voltage. So let's start at the beginning of the story. First repair attempt, I replaced the open cement fuseable resistor r850, and q880 which is str-y6456 ( was not shorted). Sent the tv back to the customer, tv ran for about a 2 weeks. Tv came back. Same r850 fuseable resistor was open. This time I ordered a repair kit, which came with r850, bridge rectifier d820, and 2 47ohm resistors at r827, r828 ( which are running hot as the board has browned near them but they show 47ohm still. Tv ran for about 5 days this time, and back with the same r850 resistor open. There are no shorted mosfets. My only thought is maybe the 2 150uf 450v caps.
So main question, what can cause this fuseable 1.8ohm resistor to keep opening?
I have 3 more of these TVs in my shop right now with the same issue, and I'm hesitant to send them home. I've let them run here for over 48 hours now strait with no issue.
Any help would be appreciated.
Comment