Hi, apologies if this is posted in the wrong section, or if asked previously (I couldn’t find anything via search).
I have a B&O MX4200 that has an intermittent fault, switching itself to standby (green to red LED illuminated) after differing lengths of time (e.g. over an hour or within 5 minutes of switching on). Seems worse if the TV hasn’t been used for a while, so thought it was likely a cold solder joint issue.
I had a look inside but could not see any obviously bad capacitors/leaks/scorching etc, just a load of dust that I carefully brushed out. TV seemed fine for a few uses but then started switching to standby again.
The TV is with a B&O recommended repair service, but after two months they haven’t managed to resolve the issue. They initially re-soldered the PSU board, but the fault occurred again. They have not confirmed if any components (e.g. capacitors) have been replaced, although I had asked for this to be done.
Has anyone experienced this issue before who could give me some advice? It seems quite common with the MX4000/4002, but the boards inside appear completely different to the MX4200.
I’m sure the repair service know what they are doing, but I am inclined to collect the TV and either (a) try an alternative repair service, (b) cut my losses and look for another TV or (c) try and live with it(!).
I have read on other forums that B&O engineers historically found these sets difficult to service, so I would be grateful for advice about cutting my losses.
Thank you in advance for any help you can give.
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