Repairing a dead Dell Optiplex 390 power supply model number H265AM-00. The TNY280 died, killing a 2 ohms resistor so we replace both of them and the output capacitors while we are at it. 5VSB rail is restored and the PSU turns on.
j'ai 38 spot LED d'un client avec ce chip foutu, sois il se met en mode surchauffe et arrête de fonctionner, sois pour certains spot led, il a explosé, pareil pour une plaque chauffante infrarouge...TNY280PN explosé.. ce composant à l'air de mal vieillir et ne fait que surchauffer.., j'ai remplacé et ça re fonctionne...
The tny280pn on my Optiplex 7010 SFF exploded, unfortunately its a very custom PSU that's hard to replace with anything else and costs about half of the PC cost. Trying to figure this mess out now.
On my PSU the chip was burned and after replacing the chip and resistor 4.4k, I get 1.2V on 5vsb rail. almost All parts were desoldered and tested, what to check?
