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I just tried to move my GQ machine (Fedora 5) with 741GX-M to a UPS (APC 350 ES). When I tried to power it up, it failed. The CPU and power supply fans spin for about 2-3 seconds then power stops. I see the power light come on to the CD-ROM and possibly the HD (front of bezel). There are no beeps. If I try this a few times in a row, after a couple of tries, the fans do not even try to spin up. I've tried removing the floppy and CD drives from the power chain, and tried removing the memory modules one at a time, but no changes.
Is this a PSU failure or a motherboard failure? I don't have another ATX power supply to try.
I also tried jumping the PS-ON to ground on the motherboard 20-pin connector. After doing this, the fan spins up and I measured 5V on the red and 12V on the yellow on the peripheral connectors (I may have those backwards), and the appropriate voltages on the 20 pin connector (12, 5 and 3.3). Does this still sound like the power supply? That's the first thing I'm going to try. Just wondering if I should buy a motherboard too when I'm there...Thanks. I plan to try that.
I also tried jumping the PS-ON to ground on the motherboard 20-pin connector. After doing this, the fan spins up and I measured 5V on the red and 12V on the yellow on the peripheral connectors (I may have those backwards), and the appropriate voltages on the 20 pin connector (12, 5 and 3.3). Does this still sound like the power supply? That's the first thing I'm going to try. Just wondering if I should buy a motherboard too when I'm there...
I suspect that your PSU is faulty... can you buy another one? This is a fairly typical of a "Blown PSU" symptom to me... I would try replacing the PSU, and then connect ONLY the Motherboard, if OK, then Hard Drive, if OK then .. and so on.. I advise this as it MAY be something connected to the PSU that caused it to "Fault" but generally they just go Toes Up for no real reason.. other than PSU component failure.
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you have 3 output connectors connected to battery back up ( there is output when input power fails
other 3 sockets are connected to main power / when main power off , no output on the mentioned connctors
Get APC Powerchute Personal Edition for free and run it. If it says your battery isnt charged, check its voltage disconnected. Charge it with a car battery charger and see if its still a good battery. If not , replace it. If the battery is good, then check the charging voltage. Should be about 14 volts. if not, check the small transformer on the main board. Should be 120 in and 17 to 18 out. 4 diodes in a bridge for charge. The input to the transf has small fuse into it alone.
Two possibilities come to mind. 1) The battery has failed and can't be charged fully (usually one cell fails and it won't charge fully). I've diagnosed this by removing the battery and trying to charge it with a variable power supply. You can try replacing the battery. 2) The UPS itself is faulty and can't charge/maintain the battery. The entire unit should be replaced.
I recommend solution 2. I had the 725VA in this consumer UPS line and when I replaced the battery, the UPS could not keep the battery charged with any load on the unit.
Check your warranty, though. The APC warranty is for 2 years on this model.
More than likely it just needs a new battery. If the power is sagging (called a brownout) the UPS is trying to switch over to the battery to keep the power consistent. The beeping is probably a code that indicates there is an issue with low voltage on the battery. New batteries are around $20-25. Here's a link to the replacement battery: http://batteryinternational.com/apc-backups-es-be350es-ups-battery-ups-batteries-f1.html
A blinking green light is likely an indication that the internal battery is nearing the end of its usable life cycle. If it's over 3 years old this is likely the case. To test, plug something in to the battery outlets and pull the plug of the UPS from the wall. If you get a short runtime (or none at all) it's the battery. Batteries are under $20 and can be found here: http://www.batteryinternational.com/apc-backups-es-be350u-ups-battery-ups-batteries-f1.html
Take off the bottom cover and make sure the battery is connected (both terminals). Plug the unit into a wall outlet. Press the power button to turn it on. Leave it plugged in for 8 hours to charge the battery. Do this with nothing plugged into the unit.
It may just need a new battery. The UPS will do a self test on the battery when you turn it on. It may have tried to read the battery and the result came back as "failed". The batteries last about 3-5 years, even less if you live in an area with bad power. The batteries are very easy to change. You can buy replacements at www.batteryinternational.com/apc-backups-es-be350es-ups-battery-ups-batteries-f1.html
Try looking for a small circuit breaker on the side that says "press to reset" - you could have tripped it accidentally when you unplugged the iPod. Also, try pressing and holding the UPS power switch for 10-15 seconds. That should force a power on as well.
Thanks. I plan to try that.
I also tried jumping the PS-ON to ground on the motherboard 20-pin connector. After doing this, the fan spins up and I measured 5V on the red and 12V on the yellow on the peripheral connectors (I may have those backwards), and the appropriate voltages on the 20 pin connector (12, 5 and 3.3). Does this still sound like the power supply? That's the first thing I'm going to try. Just wondering if I should buy a motherboard too when I'm there...
It was the PSU. Just put in a new one and it fired right up. Thanks!
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