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Old 11-10-2021, 05:42 AM   #1
wkholi
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Default NO PGI signal to ATX power supply.

Hi All:

I have a 1600 watt PSU that does not output PGO. I thought it is a bad chip first, I managed to get an equivalent, But when I started measuring the inputs of the power supervisory chip I found that PGI signal is also zero. could that still be a bad chip? where it shorts the PGI pin?

if not what supplies the chip with PGI signal. where can I get schematics for this power supply? There are so many types of power supplies

The chip is ( 1. HY510N <=> WT7510 <=> ST9S313 <=> PS113 <=>RT7501 ) and i got WT7510 as a substitute.

your help would be appreciated.

Thank you in advance.

The brand of the PSU is SURMA, 90 plus gold.

Note: All voltages on the 24 pin connector are available except PGO and all the cables have 12v and 5v to it.

Photos of PSU are in the attachment.
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Old 11-10-2021, 06:14 AM   #2
sam_sam_sam
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Default Re: NO PGI signal to ATX power supply.

There are no pictures
__________________
9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *


These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board

All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
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Old 11-10-2021, 07:55 AM   #3
wkholi
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Default Re: NO PGI signal to ATX power supply.

here are the pictures.

I guess i did not wait till they uploaded .
Attached Images
File Type: jpg 810B415B-A195-4159-9D92-ED57257A52AE.jpg (560.7 KB, 15 views)
File Type: jpg ABECB461-E525-4F9E-A4F1-D2DDEAE18DDD.jpg (624.5 KB, 14 views)
File Type: jpg IMG_8929.jpg (808.9 KB, 22 views)
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