Comments on: APC UPS Model PR550i Repaired https://jestineyong.com/apc-ups-model-pr550i-repaired/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Wed, 09 Sep 2020 04:41:28 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Saif Silmi https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-370913 Wed, 09 Sep 2020 04:41:28 +0000 https://www.jestineyong.com/?p=1449#comment-370913 Hi Jestin ,
Is it possible to reprogram the 93C46 epprom for APC 1000Av for upgrade it to 1400AV , i have many APC 1000AV and i want to upgrade it to 1400AV .. if it possible can you tell how ?
thx
Saif

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]]> By: Jestine Yong https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-171004 Tue, 11 Dec 2012 23:10:00 +0000 https://www.jestineyong.com/?p=1449#comment-171004 In reply to Reza.

HI Reza,

Sorry I do not keep schematic-try eserviceinfo.com

Jestine

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]]> By: Reza https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-170858 Tue, 11 Dec 2012 17:16:22 +0000 https://www.jestineyong.com/?p=1449#comment-170858 Hi jestine,
This is Reza, may I ask you to send me any schematics for MGE pulsar max 5000 UPS (if its possible) please!
 
thanks,
Best regards,
Reza,

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]]> By: Jestine Yong https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-127611 Mon, 01 Oct 2012 12:52:31 +0000 https://www.jestineyong.com/?p=1449#comment-127611 In reply to A.T.Sellar.

Hi At sellar,

You need an eeprom programmer to read those data inside an eeprom ic. Try lancos.com

Jestine

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]]> By: A.T.Sellar https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-127354 Mon, 01 Oct 2012 04:17:20 +0000 https://www.jestineyong.com/?p=1449#comment-127354 can a eeprom ic in a circit ,can we read it

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]]> By: Jestine Yong https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-122176 Tue, 18 Sep 2012 16:44:41 +0000 https://www.jestineyong.com/?p=1449#comment-122176 In reply to Rohmell Brills.

Hi Rohmell,

I've just got one but have yet to use it. Thanks for the tip.

Jestine

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]]> By: Rohmell Brills https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-122073 Tue, 18 Sep 2012 10:51:26 +0000 https://www.jestineyong.com/?p=1449#comment-122073 Hello Mr. Yong,
Perhaps you should install special clamshell socket to save wear and tear on your PCB from constant soldering/desoldering.
Socket such as this:
http://www.warwickts.com/product.asp?id=630

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]]> By: Jestine Yong https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-102991 Sat, 21 Jul 2012 15:57:35 +0000 https://www.jestineyong.com/?p=1449#comment-102991 In reply to Clifford.

Hi Clifford,

How long the UPS has been in service? If it is more than 2 years then the batteries could at fault. Some batteries will test good with meter but will fail when under load. Not only that a weak battery could cause lots of weird problem and you may think it is the mainboard faulty. You may also need to take noted that a fault EEPROM IC data also could cause many different type of problem.

Jestine

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]]> By: Clifford https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-102520 Sat, 21 Jul 2012 01:11:08 +0000 https://www.jestineyong.com/?p=1449#comment-102520 I have a blue gate UPS, I think the battery is working alright but when plugged, no sign of power is shown, but when I place my tester on the circuit board it shows there is current flowing. Also, it uses the battery power even when plugged to an outlet.

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]]> By: admin https://jestineyong.com/apc-ups-model-pr550i-repaired/comment-page-1/#comment-24091 Tue, 02 Aug 2011 00:03:01 +0000 https://www.jestineyong.com/?p=1449#comment-24091 HI Muneed,

Have you replace or check the batteries?

Jestine

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