Forum: BIOS & Schematic Requests!
05-02-2022, 12:55 AM
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Replies: 918
Views: 349,801
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Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
04-22-2022, 07:21 AM
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Replies: 1
Views: 222
R9 290 Missing PX_EN
Have an R9 290 I'm looking at. Seems I don't have a PX_EN. What should the voltage level typically be for this signal? What is required for the GPU to give this signal? Thanks
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Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
04-20-2022, 06:57 AM
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Replies: 10
Views: 611
Re: GTX 1660 BIOS Beep Error
Just to update this thread for anyone who may be interested. :why:
I reflowed the memory ICs and replaced the BIOS chip with a new flash. The card is now working! :bow:
Thanks to all for the...
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Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
03-12-2022, 05:17 AM
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Replies: 10
Views: 611
Re: GTX 1660 BIOS Beep Error
Thanks will have a look next time I get a chance. Going to wait for a 1.8v adapter for my programmer and have a look at re-flashing. It uses a Winbond W25Q80EW 1.8V flash memory chip.
Will...
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Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
03-11-2022, 08:38 AM
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Replies: 10
Views: 611
Re: GTX 1660 BIOS Beep Error
Thanks. No broken caps. no shorts found in diode mode.
3.3v on PEX_RST goes through an AND gate ok. AND gate has a 1.8v Vcc and 1.8v output.
I have had an oscilloscope on the refclk +/- and...
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Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
03-11-2022, 05:49 AM
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Replies: 10
Views: 611
GTX 1660 BIOS Beep Error
Have a GTX 1660 SUPER VENTUS. When trying to boot its giving me a beep code error. I get 1 normal beep followed by 3 fast short beeps.
All voltages on the rails and resistances are correct. The...
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Forum: BIOS & Schematic Requests!
03-10-2022, 09:09 AM
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Replies: 2
Views: 347
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Forum: BIOS & Schematic Requests!
02-15-2022, 10:40 AM
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Replies: 2
Views: 347
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Forum: BIOS & Schematic Requests!
01-26-2022, 05:57 AM
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Replies: 4
Views: 643
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Forum: General Electronics Technical Discussion
01-14-2022, 10:20 AM
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Replies: 3
Views: 445
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Forum: BIOS & Schematic Requests!
01-14-2022, 06:14 AM
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Replies: 4
Views: 643
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Forum: General Electronics Technical Discussion
01-13-2022, 06:34 AM
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Replies: 3
Views: 445
SOT Identification markings are MXX H8
Hi all
Anyone able to help me identify this SOT package component. I cant find a definitive answer when trying to look it up online. I believe the markings are MXX H8
The component dimensions...
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Forum: BIOS & Schematic Requests!
01-12-2022, 07:23 AM
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Replies: 918
Views: 349,801
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Forum: Announcements & Related News
01-12-2022, 05:03 AM
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Replies: 30,539
Views: 3,361,336
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