| Electronics > Repair |
| Repair Help for APC UPS BR1500G - F06 error (FIXED!!) |
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| fmashockie:
--- Quote from: Vovk_Z on September 06, 2023, 06:04:27 pm ---It looks like a hardware issue but APC UPS are known to have software problems too, e.g. loosing calibration parameters or even totally loosing all settings (230/115 V and/or 50/60 Hz etc). I've seen it on one of my UPS when smal electrolytes became a bit 'weak' (charging voltage became 24VDC instead of 27.6 VDC). --- End quote --- Wow that is fascinating Vvok! Yea I'm pretty preplexed as to what could be causing this. I want to think its a problem with the micro due to that short of the PB14 pin to VDD. I did a thorough check of the board tracing all traces and couldn't find anywhere else this short could be occurring. But at the same time, it almost seems too perfect of a fault to be a hardware issue. Kind of like BradC says, everything works fine except the AVR. In your opinion Vvok, would flashing the chip and replacing the micro resolve this issue if it is a software problem? Is the programming corrupt on the original chip to prevent this from being successful? I guess I will know soon enough. Should be receiving the necessary items to do the flash today/tomorrow!! |
| Vovk_Z:
IDK, try everything. |
| fmashockie:
--- Quote from: Vovk_Z on September 09, 2023, 06:16:35 pm ---IDK, try everything. --- End quote --- Will do! I already got the replacement micro in. Just waiting on the UART to USB cable which I should have by Monday. I downloaded the STMCubeProgrammer software as well. Seems really easy to use. I'll give an update on how the flashing of the original micro goes, and the replacement with new micro. If all that doesn't fix the issue, it would probably work just fine keeping the bases of Q63 and Q57 tied together with the original micro's PB14 and VDD pins shorted. It just wouldn't have working AVR. Who needs that anyway? :-DD |
| BradC:
--- Quote from: fmashockie on September 09, 2023, 06:34:17 pm ---It just wouldn't have working AVR. Who needs that anyway? :-DD --- End quote --- So if you get a mains spike or dip the first thing it'll do is dump your load with a relay weld fault. Makes the UPS more of a PS. |
| fmashockie:
--- Quote from: BradC on September 10, 2023, 03:25:20 am --- --- Quote from: fmashockie on September 09, 2023, 06:34:17 pm ---It just wouldn't have working AVR. Who needs that anyway? :-DD --- End quote --- So if you get a mains spike or dip the first thing it'll do is dump your load with a relay weld fault. Makes the UPS more of a PS. --- End quote --- Yes I know thats why it was a joke. Although, where I'm at, mains is fairly stable. We use these more for complete power failures. It switches from mains to battery just fine with the buck and boost relays stuck in the on position. I'd be willing to bet it would work just fine like this if I put it back into service. But, I'd rather fix it for real. |
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