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Gigabyte GP-PGM shorting on main FETs - what now?

notice: this does NOT affect GP-APGM/Aorus PGM units. This is the same OEM, but different components and main design has been used here.

 

GP-PGM

P750GM Key Features | Power Supply - GIGABYTE Global

 

GP-APGM

Gigabyte Aorus P850W - Kenmerken - Tweakers

 

Summary

Gigabyte's recently announced unit has an issue, where the OPP is set too high, causing the main FETs to explode because of it being unable to handle the load. There is no public statement from Gigabyte and I didn't reach out to them about this, but have reached out to Aristeidis Mpitziopoulos, better known as Aris about what exactly happened. All info provided is from his video and review below.

 

Quotes

Quote

Jilin Sino-Microelectronics provides the main FETs, and as you can see, they didn't survive my tests. They died in a glorified way, making one of the loudest bangs I have ever heard. The main FETs are arranged in a half-bridge topology, and an LLC resonant converter is also used to boost efficiency. The resonant controller is a Champion CM6901X.

My thoughts

I think Gigabyte's response to this is unacceptable and very worrying. They've been offered the sample back, they've had a request to send a second unit to let the reviewer test it out and declined both of these. This is a serious issue where there isn't even a statement given. All that's been done is a couple unit put into testing by R&D where they didn't find anything. I honestly want Gigabyte to call back all the units, change the FETs to a higher quality level and supply the new designs to the affected consumers. This is a serious issue that has very likely been caused by cheaping out on main components, as GP-APGM didn't show this.

 

Further information

The OCP is set at around 130%

The main fets are 2x Jilin Sino-Microelectronics JCS18N50FH (500 V, 11 A @ 100 °C, Rds (on): 0.27 ohm)

The failure happened after the unit succesfully shut down on OPP/OCP, where it was turned on again after 5 minutes.

The issue is likely caused by cheap main FETs, a too high set OPP/OCP, a design error or a combination of these.

It does not affect the similarly named GP-APGM or any other Gigabyte units from what is currently known

 

Sources

https://www.techpowerup.com/review/gigabyte-gp-p750gm-750-w/single-page.html#introduction

PSU Tier List 4.0//Motherboard Tier List//Community Standards//ATX Specification//Group Regulation//Topologies and Regulations//How many watts?//PSU Protections

Don't forget to quote or mention me

 

Primary PC:

Spoiler

CPU: I5-8600k 5.0ghz

GPU: GTX 1070 ti EVGA SC Gaming

RAM: 2x8 3333 mhz DDR4 Trident Z

MOBO: MSI Gaming Pro Carbon AC

HDD: 1 TB 7200 RPM Seagate Baracudda, 1 TB 5400 RPM Samsung Spinpoint HD103SI

SSD: Samsung 860 EVO 500 GB

Case: Cooler Master Masterbox Lite 5 RGB (modified)

PSU: Seasonic Focus GX650

 

Consoles:

Spoiler

PS4 Slim Glacier White 500 GB

PS4 FTP Special Edition 500 GB

PS3 Super Slim 500 GB

PS2 OG

Xbox OG

DS Lite White

DS Lite Black/blue

DS Lite Blue

DSI XL Orange

Gameboy Advanced Color

PS Vita v2

Wii

 

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Well, I choose my PSUs from the PSU list on linustechtips.com anyway.

Specs: Motherboard: Asus X470-PLUS TUF gaming (Yes I know it's poor but I wasn't informed) RAM: Corsair VENGEANCE® LPX DDR4 3200Mhz CL16-18-18-36 2x8GB

            CPU: Ryzen 5 3600 @ 4.1Ghz          Case: Antec P8     PSU: G.Storm GS850                        Cooler: Antec K240 with two Noctura Industrial PPC 3000 PWM

            Drives: Samsung 970 EVO plus 250GB, Micron 1100 2TB, Seagate ST4000DM000/1F2168 GPU: EVGA RTX 2080 ti Black edition @ 2Ghz

                                                                                                                             

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1 minute ago, williamcll said:

Well, I choose my PSUs from the PSU list on linustechtips.com anyway.

And as you can guess I'm taking this thing straight down

PSU Tier List 4.0//Motherboard Tier List//Community Standards//ATX Specification//Group Regulation//Topologies and Regulations//How many watts?//PSU Protections

Don't forget to quote or mention me

 

Primary PC:

Spoiler

CPU: I5-8600k 5.0ghz

GPU: GTX 1070 ti EVGA SC Gaming

RAM: 2x8 3333 mhz DDR4 Trident Z

MOBO: MSI Gaming Pro Carbon AC

HDD: 1 TB 7200 RPM Seagate Baracudda, 1 TB 5400 RPM Samsung Spinpoint HD103SI

SSD: Samsung 860 EVO 500 GB

Case: Cooler Master Masterbox Lite 5 RGB (modified)

PSU: Seasonic Focus GX650

 

Consoles:

Spoiler

PS4 Slim Glacier White 500 GB

PS4 FTP Special Edition 500 GB

PS3 Super Slim 500 GB

PS2 OG

Xbox OG

DS Lite White

DS Lite Black/blue

DS Lite Blue

DSI XL Orange

Gameboy Advanced Color

PS Vita v2

Wii

 

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I'm really worried about this PSU, I also commented on his vid, I have a 3080 + 10700k and it's been working fine for nearly 2 months. I didn't buy it cause I was looking to cheap out, I just have good experience with Gigabyte and this was a new unit. However, now that there's this mess Idk what to do. Also, my GPU is a Gigabyte with the connectors issue that I personally didn't experience (yeah that's a thing, the pins can become bent). I fear that if I disconnect the cables from the GPU the pins will become bent... Big paradox and I honestly don't know what to do.

 

Sorry for the long post just had to get it off my chest.

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On 11/29/2020 at 8:33 AM, williamcll said:

Well, I choose my PSUs from the PSU list on linustechtips.com anyway.

Stuff like this is why I look not just at the product but also at the company and their customer service record.

 

EVGA hasn't done me wrong yet. And they have a reputation for good customer service as far as I know.

Ketchup is better than mustard.

GUI is better than Command Line Interface.

Dubs are better than subs

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The SOP of any company is to sandbag the issue first. Either way, the truth shakes out in the end.

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