Well it is the driver for the mosfet that was bad, and it is common for it to fail when a mosfet blows. Are you sure the shipping is that much. Ask them to just put it in an envelope. I have done that before.
Found some more resistors burnt. SMD R983 10 ohm read open. Have various 603 and 805 packaged resistors. Also R932 330 ohm was burnt. This is under the large coil L903. How should I test that coil? I had to remove it to replace R932.
This are all surrounding ic902 . Maybe the resistors blowing protected that ic?
Mouser also said they don't put parts in envelopes so they did offer a cheaper shipping not listed on their online. between 2-5 dollars . so I ordered 4 pieces .
Installed all the new parts. Should I do the jumper again to see if I get the correct voltages?
One thing, I kept the hot air too long on ic902 when removing it and the board bubbled up a bit. Delaminated. I checked all continuity points from the legs of that IC and some surrounding parts to make sure its ok.
Seems like no harm was done. And I don't think any through holes or bias are in that section. except for the ones in the pic above. Those are ok.
Well still nothing, but at least no parts blew . I think maybe one or more of the optocoupler phototransistors TCET1103G might be bad.
There are three on the board all have readings between pin 1 and 2 in both direction and for pins 3 and 4 but ic909 measures as a diode would on 1 and 2 and for 3 and 4 its OL but for a short time it has a reading on one direction, I think its from me testing pins 1 and 2 and It activates the LED ? they are ic 909,910 and 911.
How do I test theses? I might try my tester but not sure it it has those types of parts programed into it.
timorenga: Gracias por aceptarme como miembro del foro, Estoy buscando manual de servicio para Denon AVR4310CI si alguien lo tiene se agradecería mucho que lo comparta Gracias
Jul 17, 2021 20:07:03 GMT -5