Re: Cougar CMX 700W suddenly Went off
Make sure you measure the green wire without connecting it to ground, ie: without trying to force the PSU on.
That glue is much easier to remove if you heat it, try a hairdryer or heat gun on low temperature. Carefully pull it off with pliers or such. Don't damage the parts under it.
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Re: Cougar CMX 700W suddenly Went off
Well, badly.
If you don't have PWR On available than no wonder it can not be started. Most likely problem with the secondary supervisor.Leave a comment:
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Re: Cougar CMX 700W suddenly Went off
Seems like you have some chloroprene glue in the unit, check if it went brown somewhere shorting something and if so, clean it.
Do you have about 3.3 V on the green wire?Leave a comment:
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Re: Cougar CMX 700W suddenly Went off
Addtional photo.Attached FilesLeave a comment:
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Re: Cougar CMX 700W suddenly Went off
i have made some Diode testest
D81,D82,D83 = .455
D24 = .345
D10 = .310 ( but on the reverse it keep counting up and stop at 1.1)
D6 = .445Leave a comment:
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Re: Cougar CMX 700W suddenly Went off
good morning every one and sorry for the late replay.
i have tested all voltages while shorting the PS_ON
the only working one is the 5VSB ( and it doesn't need to short on PS-ON ) it on all time.
all other voltages doesn't work .
should i should more photos for the power supply ?Leave a comment:
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Re: Cougar CMX 700W suddenly Went off
I'd be curious to know if the thing is getting 5VSB too. When you hit the power while shorting PS_ON, does the fan tick for a second? I noticed that the daughterboard between the primary heatsink and main transformer is covered in what looks like conductive glue. Look closely to see if there are any burn marks there.
Black PCBs look cool but make troubleshooting harder since you can't see discoloration very well
Check the startup cap as well which looks to be that small cap by the large high voltage cap.Leave a comment:
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Re: Cougar CMX 700W suddenly Went off
I'd also be looking for the 5V STBY rail first while the PSU is plugged in. If the STBY rail works, force the PSU on and check the DC voltatge on the main filter capacitor. Be careful, you are connected to mains voltage and if the PFC booster is running, there is 390V DC on that capacitor.
Can you explain as best as you can what happend? Did it just turn off, or was there a bing bang, or is the fuse blown etc?Leave a comment:
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Cougar CMX 700W suddenly Went off
Hello,
i have : Cougar CMX 700W
Model : CGR B2-700
the power supply stopped working.
i tried to connect the green wire with the black wire to activate the fan but still nothing ! .
how can i troubleshoot such thing ?
Thank youAttached Files -
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