A neighbour and friend asked me to look at this dinosaur. He's had it since new, about 15 years he reckons and it will have had a lot of use in that time. Though it is no longer the 'primary' TV in the house, it is in the bedroom, but his wife is practically bed-bound so it does a long shift every day. Did.
Apparently it has been taking longer and longer to come out of standby until the other day when it would not start. He remarked the the red standby LED was flashing instead of turning green.
As occasionally happens, he went to show me the symptoms and it came on - albeit with an uncomfortable delay. But it displayed as good a picture as can be expected of any elderly Sony LCD. But, as he had a spare set in another room it was decided this one should come back to the surgery anyway. It took two of us to lift it down from a very high wall bracket.
Back at base and the set performed its no-go accompanied by the 3 flashe pattern of the LED a few seconds after power-up. Seeing the amount of dust that had accumulated on the vents I'm thinking this is going to be a nice easy job for a Sunday hunting some retired capacitors.
However, after getting the back off there were no obvious bulges or leaks to be seen among the 12 or so electrolytics on the PSU. So my trusty 'Atlas' ESR capacitor tester came into play and although 2 or 3 of the cap's were perhaps just the wrong side of acceptable, there weren't any noticably high resistance ones. I changed the iffy ones, popped the board back in and unsurprisingly was rewarded with nothing more than the 3 LED salute once again. I also inspected the solder side of the board for dodgy solder joints.
By now it was dinner time and while digesting that I had a quick look on here and found a couple of threads listing similar symptoms. One suggested testing by disconnecting the t-con board. Being an easy one I did this and the LED stayed steady. A quick zap from a remote and it came to life without any undue delay. BUT it now wouldn't go back to standby, or respond in any way to the remote, yet the power buttons on the top of the set worked. I pulled the power, plugged the t-con back in and powered up again and rather surprisingly it still worked, coming straight back on - presumably remembering its previous state(?). Still no remote response but the menu & volume button on the top of the set brought up the appropriate graphics.
So to summarise - set displayed 3-flash error before disconnecting t-con board, started up OK on remote with t-con board disconnected, still starts up with t-con reconnected but no longer responds to remote.
It's bed time now, I will check some voltages tomorrow but just hoping someone with more experience with these things might be able to give me some pointers
Thank you in advance.
Apparently it has been taking longer and longer to come out of standby until the other day when it would not start. He remarked the the red standby LED was flashing instead of turning green.
As occasionally happens, he went to show me the symptoms and it came on - albeit with an uncomfortable delay. But it displayed as good a picture as can be expected of any elderly Sony LCD. But, as he had a spare set in another room it was decided this one should come back to the surgery anyway. It took two of us to lift it down from a very high wall bracket.
Back at base and the set performed its no-go accompanied by the 3 flashe pattern of the LED a few seconds after power-up. Seeing the amount of dust that had accumulated on the vents I'm thinking this is going to be a nice easy job for a Sunday hunting some retired capacitors.
However, after getting the back off there were no obvious bulges or leaks to be seen among the 12 or so electrolytics on the PSU. So my trusty 'Atlas' ESR capacitor tester came into play and although 2 or 3 of the cap's were perhaps just the wrong side of acceptable, there weren't any noticably high resistance ones. I changed the iffy ones, popped the board back in and unsurprisingly was rewarded with nothing more than the 3 LED salute once again. I also inspected the solder side of the board for dodgy solder joints.
By now it was dinner time and while digesting that I had a quick look on here and found a couple of threads listing similar symptoms. One suggested testing by disconnecting the t-con board. Being an easy one I did this and the LED stayed steady. A quick zap from a remote and it came to life without any undue delay. BUT it now wouldn't go back to standby, or respond in any way to the remote, yet the power buttons on the top of the set worked. I pulled the power, plugged the t-con back in and powered up again and rather surprisingly it still worked, coming straight back on - presumably remembering its previous state(?). Still no remote response but the menu & volume button on the top of the set brought up the appropriate graphics.
So to summarise - set displayed 3-flash error before disconnecting t-con board, started up OK on remote with t-con board disconnected, still starts up with t-con reconnected but no longer responds to remote.
It's bed time now, I will check some voltages tomorrow but just hoping someone with more experience with these things might be able to give me some pointers
Thank you in advance.
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