From Newsgroup: sci.electronics.repair

This a newer UPS which has gone through only 1 battery.
New battery is not recieving a charge; diagnostic screens not working
with fully charged battery.
No visible component failures.
I don't have sufficient skills to do much more without a schematic [or
probably even with a schematic].
Any hint on where to troubleshoot?

Thanks.
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From Newsgroup: sci.electronics.repair

John Keiser <johnkeiser@juno.com> wrote:

This a newer UPS which has gone through only 1 battery.
New battery is not recieving a charge; diagnostic screens not working
with fully charged battery.
No visible component failures.
I don't have sufficient skills to do much more without a schematic [or probably even with a schematic].
Any hint on where to troubleshoot?

I'd start by getting a manual. Downloads/Tripp-Lite-Owners-Manual-889464%20(2).pdf

Not much information, but it does say something about
"...press and hold the power button until the alarm..."
To my way of thinking that's rather unusual, I don't
usually hold buttons until something makes noise.

Beyond that, maybe look for fuses inside? The UPS units
I have are absolutely dead unless connected to a battery.

hth,

bob prohaska

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From Newsgroup: sci.electronics.repair

On Sat, 13 Sep 2025 20:30:40 GMT, "John Keiser" <johnkeiser@juno.com>
wrote:

This a newer UPS which has gone through only 1 battery.

How long has the UPS been operational? If it killed "only" one
battery, I would guess 5 years.

New battery is not recieving a charge; diagnostic screens not working
with fully charged battery.
No visible component failures.
I don't have sufficient skills to do much more without a schematic [or >probably even with a schematic].
Any hint on where to troubleshoot?

Thanks.

I keep finding bulging electrolytic capacitors in such UPS's. You can
visually see the bulging electrolytic capacitors but an ESR tester
will catch more of the smaller electrolytics. Examples: <https://www.google.com/search?udm=2&q=bulging%20electrolytic%20capacitor>

This might help:
"p-lite SMART1000LCD not charging, no emergency power!" <https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-power-supplies-and-power-supply-design/3179999-tripp-lite-smart1000lcd-not-charging-no-emergency-power>
--
Jeff Liebermann jeffl@cruzio.com
PO Box 272 http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann AE6KS 831-336-2558
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From Newsgroup: sci.electronics.repair

bp@www.zefox.net wrote:

John Keiser <johnkeiser@juno.com> wrote:

This a newer UPS which has gone through only 1 battery.
New battery is not recieving a charge; diagnostic screens not
working with fully charged battery.
No visible component failures.
I don't have sufficient skills to do much more without a schematic
[or probably even with a schematic].
Any hint on where to troubleshoot?

I'd start by getting a manual. Downloads/Tripp-Lite-Owners-Manual-889464%20(2).pdf

Not much information, but it does say something about
"...press and hold the power button until the alarm..."
To my way of thinking that's rather unusual, I don't
usually hold buttons until something makes noise.

Beyond that, maybe look for fuses inside? The UPS units
I have are absolutely dead unless connected to a battery.

hth,

bob prohaska

Yes, that procedure worked in the past.
No joy now.
Thanks!
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From Newsgroup: sci.electronics.repair

Jeff Liebermann wrote:

On Sat, 13 Sep 2025 20:30:40 GMT, "John Keiser" <johnkeiser@juno.com>
wrote:

This a newer UPS which has gone through only 1 battery.

How long has the UPS been operational? If it killed "only" one
battery, I would guess 5 years.

New battery is not recieving a charge; diagnostic screens not
working with fully charged battery.
No visible component failures.
I don't have sufficient skills to do much more without a schematic
[or probably even with a schematic].
Any hint on where to troubleshoot?

Thanks.

I keep finding bulging electrolytic capacitors in such UPS's. You can visually see the bulging electrolytic capacitors but an ESR tester
will catch more of the smaller electrolytics. Examples:

<https://www.google.com/search?udm=2&q=bulging%20electrolytic%20capacitor>

This might help:
"p-lite SMART1000LCD not charging, no emergency power!"

<https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-power-supplies-and-power-supply-design/3179999-tripp-lite-smart1000lcd-not-charging-no-emergency-power>

Jeff,

Yes, maybe 5 years old.
Very clean.

I am always pleased to find a bulging capacitor.
These are flat and virginal. :(
I will dig out my ESR meter but am not optimistic.

The badcap forum string did mention fragile relays in Tripp-Lites.
That is a promising lead I will pursue.

Thank you.

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From Newsgroup: sci.electronics.repair

John Keiser <johnkeiser@juno.com> wrote:

Yes, that procedure worked in the past.
No joy now.

It's interesting that the page at https://tripplite.eaton.com/support/omnivs1000lcd
proclaims a 3 year warranty. Seems like pre-emptive
defense, as if they know they have a problem.

I wonder what might happen if you innocently asked
for tech support troubleshooting the "recent" purchase.

Admittedly it's a long shot, but there's little to lose.
Even at five years, some amount of support is owed.

Good luck,

bob prohaska

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From Newsgroup: sci.electronics.repair

John Keiser wrote:

For closure,

This particular Tripp-Lite gets some bad reviews.

Someone on You Tube had success reflowing the IC leads. I didn't.
Caps tested good.
I was then clumsy and destroyed one of the four MOSFETs in a nice ball
of fire and smoke.
Lacking sufficient incentive to replace the MOSFET, I will chalk up to experience.
Thank you both for responding.

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