Hi All,
A family friend has one of these,i am guessing it must be 8-10 years old?
It has now gone faulty,audio but no display.If the mains supply is removed it will come on but next time it is taken out of standby...same result.Is there a common fault with this set please?
I do not usually get involved these days,but have an electronics background,so could save my friend the cost of a new TV.

Cheers....Phil.

Samsung had (maybe still do?) a bit of a reputation for using dodgy capacitors in the power supply. That may be a place to look. A few electrolytic capacitors will be a load cheaper than a new telly.

Depends on how you feel about taking it apart and poking about with a soldering iron. Mind you if it's not the power supply caps it may well be time to take it down the tip and invest in a new one. It could be that with a set that old spares are hard to get or even non-existent. Plus working out what is actually broken might not be that easy.

Another thought is that it could be the backlighting for the display. You can sometimes tell if this is gone by looking very closely at the screen and you may be able to see a very faint picture. Again though, fixing that may not be easy if spares are hard to find.

Most common fault on Samsung sets was failure of electrolytic capacitors in the PSU, as they knowingly fitted sub-standard ones. This also often corrupted, or even damaged, the EEPROM chip which stores all the settings in the set.

Sometimes you can spot the duff caps visually, as they might be domed or even leaking electrolyte, otherwise you need an ESR meter to detect them.

Basically there's three steps:

1) Replace the faulty capacitors.

2) If not cured try resetting the EEPROM (requires a shorting link).

3) If not cured try replacing the EEPROM.

Hi Chris and Nigel,
Thanks for that,i will definitely have a look for the electrolytics and take it from there.

Cheers...Phil.