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Red to black · 30th Nov 2022, 9:56 pm

It is running hot because the PSU is not running normally, ie. it is attempting to run from the start up supply.

The TDA4600 PSU is very well documented and has several known stock faults.

The earlier TX100 used the same Thorn derived SCR start up circuit as this TX98.
This PSU is very similar to the TX100 in respect of its design, look at the circuit descriptions of the TX100, TX99 and TX98 as they were all very similar.

30th Nov 2022, 9:56 pm	#12
Red to black Nonode Join Date: Mar 2010 Location: Sunderland, Tyne and Wear, UK. Posts: 2,474	Re: TX98 Blown up power supply It is running hot because the PSU is not running normally, ie. it is attempting to run from the start up supply. The TDA4600 PSU is very well documented and has several known stock faults. The earlier TX100 used the same Thorn derived SCR start up circuit as this TX98. This PSU is very similar to the TX100 in respect of its design, look at the circuit descriptions of the TX100, TX99 and TX98 as they were all very similar. __________________ I don't suffer from Insanity. I enjoy every minute of it.