Re: CyberPower PR1500 rackmount UPS - no response
Well, thanks for the replies - and the link to the other thread, I didn't see that, though admittedly I assumed my question on this forum was unique, so didn't expect to see essentially the same problem!
I'll read through that thread and try to test a few things as mentioned here and in the other thread!
Again, thank you!
Ran
ran
Senior Member
Last Activity: 07-11-2017, 06:58 AM
Joined: 10-17-2006
Location: Worcester, MA
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CyberPower PR1500 rackmount UPS - no response
Hi all,
First, if this is beyond the purvey of this site, my apologies - let me know and I'll move on.
I've got a Cyberpower PR1500 rackmount UPS which now fails to turn on. No obvious damage, not dropped, no bad noises, smoke or anything. It was working fine, disconnected for a week, when plugged back in, it fails to turn on. No lights, no nothing. I can't figure out what may have caused this.
Things I've checked/tried:
- different outlets (different circuits, including original outlet)
- push reset buttons on back
- opened... -
Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
so, how did your recapping go? I'm still awaiting info on what to do with mine...though the thing has depreciated so much.. just..sitting there...... *sigh*
I'd like to get the PS fixed...but I really am just not sure what I need to get......Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Just thought I'd make a quick bump here, in case KC has had a chance to work out that info for this mirror mac PS I've still got open and sitting to the side gathering dust....
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Not yet...still waiting for kc's info on where to get the components and such........................
...
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Heh, thanks kc, I appreciate it!...
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Hi Toasty,
Sorry, busy-ness comes and goes. Haven't looked at it since, but a PM from kd suggested he was "in the process" but it was "low priority" since he has corporate customers to take care of...
I'll just wait until he gets time to send me the info about parts and from where and such.......
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Yah.
I found these main cap replacements @ Digikey:
[URL=http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=P13263-ND]P13263-ND[/URL]
[URL=http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=P14094-ND]P14094-ND[/URL]
[URL=http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=P14093-ND]P14093-ND[/URL]
[URL=http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=493-2839-ND]493-2839-ND[/URL]
...Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
hahah... but I am a scientist, it's my job to take something simple and make it as complicated as possible...or, wait..should that be the reverse? 
...
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Cool, that looks pretty simple. I could probably do that wood platform thing and just mount a 15/20A GFI outlet on there, yes? What about grounding?...Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
darn - I tried to add a few pics to that last post on the innards of the speed controller, but was too late to edit.
Anyway, if you're wondering just what exactly that speed controller has on the inside, see the additional pics....
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Hiya Toasty!
Thanks for responding so quickly!
I figured it was just the main cap, but is that unlikely to be the primary component gone bad, but more a secondary effect?
Ok.
The only thing I have is a "Speed Controller". See pics for what it is. Not sure if that would really work or not...
Huh, I don't think I'd have an idea of how to set that up......Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Well, as indicated above, I do get low readings on all the rectifiers and such. Maybe they're ok?
I was also going to replace the X-capacitor near the fried temp. dependent resistor that got scorched. However, the only way I can think to get that out is to remove the closest toroid, which, after trying to work back and forth to get all four of the leads desoldered seemed really hard.
So, I just checked with my multimeter and I get a reading of about 6.6-7.0uF across (still in board). I compared...Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Well, I pulled the main cap off this weekend (390uF, 420V) and get no reading across the leads when set to capacitance.
As an aside, whenever I test good caps - still in bags (e.g. 2200uF, 330uF, etc) I never seem to see the full reading. Is this normal? For the 2200uF, I only see about 1800uF, and for the 330uF, I'll see maybe 300...
Anyway, do you think I could just replace that one big cap and the temp. dependent resistor that blew, or are there more likely other bad components?
...Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
sorry - that's out of limit/range, no reading.
Yep, figured I'd have to do that. Will try to over the next couple of evenings...
I believe there is attached to one of those heatsinks. I will look check it tonight. Umm... regarding testing it, I just need to do a continuity/resistance test, correct? I should see different readings in each direction (high vs. low) and if I see the same, then that would mean the rectifier is shot, yes?...Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
... sorry this wasn't in the previous post, but in addition to measuring resistance across the Big cap, I also looked at several MOSFET's
Resistance values here varied tremendously. On most of the ones on the side opposite the burnt section near the AC in, I was getting resistances of 0.23 - 0.33 k Ohms. On the ones near the burnt section, values of 4.5 M Ohms were being read. (D - black, G - Red)
Again, do these values tell me they're ok or are they relatively meaningless?Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Hrrm. So, following Toasty's suggestion, I set my multimeter to Ohms, and tested the resistance across the soldered leads of the big black cap
I get a reading of 0.435 M Ohms (black to neg, red to pos, OL when reversed). Umm..does that mean anything regarding whether the cap is good or not? Am I still going to have to desolder it?Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
I completely removed the board from the casing, and see no obvious damage on top or bottom, besides in the pics I showed you. Nothing appears bulging or anything
So, I've been playing around with my multimeter.
I haven't removed anything from the board, so I don't know if any of this is accurate.
I tested the capacitance (uF-2000) of several caps on the board, and the resulting values were all within about 30uF of the rated value. When I tried this with the main cap, by touching...Leave a comment:
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Re: 42 Inch Plasma TV with bad caps
With all the help I've rec'd on this forum, I wish I had some sage advice to profer, but alas I do not.
...but I hope someone else will chime in with some good info.... I'm curious if you can fix this.
BTW, what kind and how much for the oscilloscope. I've been sorely tempted to get one myself...but have held back due to my ignorance....Leave a comment:
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Re: PowerMac Dual 1Ghz Mirror Drive Pop&Burn Power Supply
Thanks, Toasty - I was going to take the board out this weekend and do just that. I'll look around on the site, I did look through the sticky FAQ's, but didn't see much, but I know there are about a bazillion "guides" on how to test whoseewhatsits, gigamaroles, and transmogrifiers, so I should be good on that end, I think.
Will report back on my findings next week....
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