I have a strange question. After replacing the shorted out fets and diodes on the sc board, what do I use in place of that gray rubber substance to keep the heatsinks on?
-
Oh, sadly it has no screw...
What is the proper way to open this so that not destroy rubber?
I feel if go on forward with not knowledge howto open, that it be broken rubber seal on it.... -
Has anyone ever gone down this road? I have a number of copper (and copper plated :/ ) and aluminum heatsinks. As well as full computers. Ever heard of any companies that will buy them off me (for not that much probably). I've been sending them to e-recycling
I kept a beige taaaaall antec case, going to try TC's yellowing remover and try to create an old system. Probably multiboot with DOS and 98 and 2k to cover all my bases
Maybe even use a certain Voodoo5 card in it
-
Hello Sharp TV experts
Our Sharp LC-80LE642U displays one short one long flash error code which is a backlight error. I went into service mode and there were 8 lamp error counts recorded. I reset the count to 0 and did a reset. The last monitor error cause was 16 B00014639:12. 16 is the code for backlight error. I tried to power the tv up but went back into error mode.
> I checked voltages on the power supply board and they all check out .. including 3.28 volts at the error pin.
> There is power to the cpu and T-CONN and no faults found there. The cpu has a flashing...01-24-2025, 11:51 PM -
Hi!
I was always wondering why TV manufacturers use ceramic heatsinks on many boards. Even mixed ones where one chip has a white ceramic heatsink and another chip a black aluminium heatsink.
Is there some magic voodoo going on? I know that usually black anodized heatsinks can dissipate more heat. Why do they use white ceramic ??
Would be highly appreciated if someone could explain this sorcery.. -
This is a warning to inexperienced and experienced techs alike:
The De-facto standard is to have the primary side heatsink live in switching power supplies.
That is the primary side heatsink is referenced to the negative of the bulk filtering capacitor.
Therefore never ever touch the heatsink if the device is plugged in.
And even if it is unplugged let the capacitor discharge first!
Another really serious concern is that the power switch also by De-facto standard is single pole.
This means it only cuts power to the phase or neutral (not both) depending...06-09-2021, 12:01 PM
Comment