NO PGI signal to ATX power supply.

wkholi · 11-10-2021, 05:42 AM

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.

**sam_sam_sam** · 11-10-2021, 06:14 AM

There are no pictures

wkholi · 11-10-2021, 07:55 AM

here are the pictures.

I guess i did not wait till they uploaded

.

11-10-2021, 05:42 AM	#1
wkholi New Member Join Date: Jun 2021 City & State: Cairo Governorate My Country: Egypt I'm a: Knowledge Seeker Posts: 18	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.

11-10-2021, 06:14 AM	#2
sam_sam_sam Badcaps Veteran Join Date: Jul 2011 City & State: Some times Sunny Jacksonville FL My Country: USA Line Voltage: 120 Volts 60 HZ I'm a: Knowledge Seeker Posts: 3,653	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 50F then at 90F 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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