So I replaced the caps and replaced the IC thats MR201 and still no dice, it heats up to 65C soon after it plugged in.. It's so simple but so hard, I've been thinking here for a few what would prevent or keep me from getting a stand by voltage from a SMPS it should be giving me from what it seems 5V and 12V.
Also what kind of transformer is this?? I've never seen one with 4 legs on one side and 6 on the other..
And I assume since IC201 is getting hot so quick something must be shorted?
Wonder if it's just cheaper to buy a new power supply. Could be anything wrong with it etc. But sounds like you are driven to fix the thing. Did you have a look at the pdf I uploaded, might be of assistance.
haha the cost of a new power supply is pretty much the cost of a new projector as, no projectors for parts of my model exist and the power supply is not sold alone.
And this board is only but so big.. I will say however this makes me hate on switch mode power supplies..
I have looked at the pdf you uploaded, I'm not sure if hooking my scope up is going to tell me much and I'm a little worried about taking the scope on something that's at 160VDC.
You know I was thinking something.. I assume since I see 164VDC on the primary side I can safety say those filter caps are fine? re-reading that pdf again the two blue caps near the High-voltage symbol.. is it possible for film caps to short? How would they read on a meter?
Well looking at the schematic there is not alot of components,so may be worth replacing the diodes and semi';s. There could also be a shorted or open resistor. for I think it would be quite rare if one of the transformers or inductors were faulty. Don't be snooping around with a scope unless you isolate the power supply, could damage your scope.
Well looking at the schematic there is not alot of components,so may be worth replacing the diodes and semi';s. There could also be a shorted or open resistor. for I think it would be quite rare if one of the transformers or inductors were faulty. Don't be snooping around with a scope unless you isolate the power supply, could damage your scope.
Yeah I did not isolate it and I ended up blowing the fuse on the board I'm trying to fix I just took out the Schottky barrier diode and tested it and it checks out fine, looks like I will be buying a SMD hot air station.
I tested that 3W 0.36 Ohm resistor and it checks out fine as well.