OK, longish story here but there might be something relevant.
About 4 years ago I was given this old plasma as it had gradually died. It was taking longer and longer to come out of standby - tripping, re-starting etc. etc. until it finally 'caught'. By the time I got it it just continually tried and tried without ever starting up proper. Up until then it had spent its life in a local bar, running 12~14 hours per day, every day so needless to say there were some pretty tired cap's in there. I replaced those but the set still wouldn't go and it turned out the flash IC on the control board had suffered. A friendly firm in Leeds replaced it for me and the set has been working flawlessly ever since.
Until this evening. It had already been "one of those days", a few things hadn't gone right and the TV decided to join in. It hadn't been on for a couple of days, I started it up with the remote as usual; it played its little start-up melody (which the parrot has copied to a tee!) but the standby LED kept flashing and no image appeared. Well, almost no image. There was a trace of the last image it had displayed (the radio back-picture of my satellite receiver) but the LED kept flashing (no pattern, just on and off at about 0.5Hz) and not responding to the remote any more.
An emergency back-up set was pressed into action and the Samsung went down to the bench until after dinner.
I didn't try it again straight away as I didn't want to risk corrupting the flash again. I whipped the back off to see if there were any swollen caps, none. And nothing else obvious either. So, on with the power to check the obvious voltages and.. it started up. I tried it off & on several times at the mains and with the remote, it would not fault. Left it running for 30 min's and still behaving perfectly. Even a few gentle taps around the boards didn't reproduce the problem.
I checked the 5V & 12V TP's they were pretty much spot-on and Va & Vs were within 1V of their specified 63 & 205 volts respectively.
Now it's a heavy old thing so I'd like to be reasonably sure it's fixed before screwing it back together and lugging it back up the stairs to its home.
Has anyone heard of this behaviour before?
I know it's an old set but I'd like to give it another chance - the picture is still remarkably good and the sound beats most modern sets hands-down.
Any suggestions gratefully received, TIA.
About 4 years ago I was given this old plasma as it had gradually died. It was taking longer and longer to come out of standby - tripping, re-starting etc. etc. until it finally 'caught'. By the time I got it it just continually tried and tried without ever starting up proper. Up until then it had spent its life in a local bar, running 12~14 hours per day, every day so needless to say there were some pretty tired cap's in there. I replaced those but the set still wouldn't go and it turned out the flash IC on the control board had suffered. A friendly firm in Leeds replaced it for me and the set has been working flawlessly ever since.
Until this evening. It had already been "one of those days", a few things hadn't gone right and the TV decided to join in. It hadn't been on for a couple of days, I started it up with the remote as usual; it played its little start-up melody (which the parrot has copied to a tee!) but the standby LED kept flashing and no image appeared. Well, almost no image. There was a trace of the last image it had displayed (the radio back-picture of my satellite receiver) but the LED kept flashing (no pattern, just on and off at about 0.5Hz) and not responding to the remote any more.
An emergency back-up set was pressed into action and the Samsung went down to the bench until after dinner.
I didn't try it again straight away as I didn't want to risk corrupting the flash again. I whipped the back off to see if there were any swollen caps, none. And nothing else obvious either. So, on with the power to check the obvious voltages and.. it started up. I tried it off & on several times at the mains and with the remote, it would not fault. Left it running for 30 min's and still behaving perfectly. Even a few gentle taps around the boards didn't reproduce the problem.
I checked the 5V & 12V TP's they were pretty much spot-on and Va & Vs were within 1V of their specified 63 & 205 volts respectively.
Now it's a heavy old thing so I'd like to be reasonably sure it's fixed before screwing it back together and lugging it back up the stairs to its home.
Has anyone heard of this behaviour before?
I know it's an old set but I'd like to give it another chance - the picture is still remarkably good and the sound beats most modern sets hands-down.
Any suggestions gratefully received, TIA.
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