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Wasmachineman_NL
Joined: 04 Jul 2019
Posts: 988
Location: Netherlands
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 Posted: Sun Apr 24, 2022 11:28 am Post subject: Wasmachineman_NL: ASUS P4P800-VM (SOLD) |
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Yours for €10. Haven't tested it beyond looking if it POSTs though, if there's serious interest i'll test it properly.
Comes with CPU and 2x1GB DDR1 RAM. This board is a great platform for Win98 as it's got native support for it: https://www.asus.com/supportonly/P4P800VM/HelpDesk_Download/
Last edited by Wasmachineman_NL on Sat Oct 29, 2022 7:56 am; edited 3 times in total |
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Wasmachineman_NL
Joined: 04 Jul 2019
Posts: 988
Location: Netherlands
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| Posted: Wed May 11, 2022 3:41 pm Post subject: |
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| Damn, I guess the market for these must be nonexistent. Not even a single response on my advert here or elsewhere. |
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mavroxur
Joined: 06 Jul 2005
Posts: 1192
Location: Wichita Falls, TX
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| Posted: Sat May 14, 2022 11:11 am Post subject: |
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Man, I threw away probably 15-20 of the P4P800-M version of that board back in the day for in-warranty failures.
The disturbing fact is that we sold probably 30 total of them at my shop.
All with the same failure, all the same root cause. Southbridge super meltingly-hot when power applied. No POST. Board dead. Some Southbridge ICs even melted the plastic @ the die location or popped a chunk out of it when they failed.
Prior to the failure, virtually all customers reported the system hard froze while in use after inserting a USB flash drive or connecting a USB device of some sort. We're guessing it was a lack of ESD suppression on the USB lines and the USB root hub lives inside the southbridge. Static discharge or some other differential surge on the D+ and D- lines made it way straight thru to the hub and blew the southbridge on them all. |
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Wasmachineman_NL
Joined: 04 Jul 2019
Posts: 988
Location: Netherlands
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ApostolCV
Joined: 26 May 2020
Posts: 207
Location: Ukraine
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| Posted: Sun May 15, 2022 12:34 pm Post subject: |
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After killing some good motherboards on i865 chipset i made a gold rule for me.
If i need to copy some information to USB . I turn of whole the system and then plug a USB-drive. |
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mavroxur
Joined: 06 Jul 2005
Posts: 1192
Location: Wichita Falls, TX
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| Posted: Mon May 16, 2022 7:28 pm Post subject: |
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That's crazy - it's so far long ago I never bothered to see if it was a wide spread issue or not. The bunch we ordered all came in the same lot so we assumed it was a bad batch. By the time we made it through the entire batch or so, we were selling better, newer boards by then and were selling a lot of AMD Athlon systems for a while. |
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ph4nt0m
Joined: 01 Jan 2018
Posts: 812
Location: Europe
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| Posted: Wed May 18, 2022 12:00 pm Post subject: |
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It's possible to "repair" those failed boards with ICH4 and ICH5 south bridges. Locate VCCSUS1_5 which is shorted to earth and apply 3.3V to burn it out completely. Boards will POST again and work like usual without any USB ports available. Sometimes AC'97 audio or IDE/SATA fuctionality may die as well, but it's still better than just a dead board.
Don't use internal USB ports on such boards routed to front panels and they will be fine. If you absolutely have to, use an external USB hub.
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Wasmachineman_NL
Joined: 04 Jul 2019
Posts: 988
Location: Netherlands
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| Posted: Wed May 18, 2022 1:11 pm Post subject: |
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| ph4nt0m wrote: | It's possible to "repair" those failed boards with ICH4 and ICH5 south bridges. Locate VCCSUS1_5 which is shorted to earth and apply 3.3V to burn it out completely. Boards will POST again and work like usual without any USB ports available. Sometimes AC'97 audio or IDE/SATA fuctionality may die as well, but it's still better than just a dead board.
Don't use internal USB ports on such boards routed to front panels and they will be fine. If you absolutely have to, use an external USB hub. |
lmao what the fuck, where did you find this out?
What do you mean with "without any USB ports available"? Do you mean doing the above will completely kill the USB controller on the SB? |
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ph4nt0m
Joined: 01 Jan 2018
Posts: 812
Location: Europe
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| Posted: Wed May 18, 2022 1:48 pm Post subject: |
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| Wasmachineman_NL wrote: | | lmao what the fuck, where did you find this out? |
I did it myself. Such cheap boards weren't worth my time and a new south bridge to replace the failed one, but it took just a few minutes to "repair" them this way. Add a simple PCI USB 2.0 controller and it's ready for office use again. Like a zombie 
| Wasmachineman_NL wrote: |
What do you mean with "without any USB ports available"? Do you mean doing the above will completely kill the USB controller on the SB? |
Yep, burnt out quite literally. If it makes you feel better, the controller has been dead already 
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Last edited by ph4nt0m on Wed May 18, 2022 1:53 pm; edited 1 time in total |
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i440bx
Joined: 30 May 2004
Posts: 1349
Location: Germany
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shrad
Joined: 16 Sep 2020
Posts: 73
Location: Belgium
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| Posted: Wed May 18, 2022 3:07 pm Post subject: |
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| what about just desoldering the component? seriously... not that hard to do, just put a blob of solder and remove the thing with a toothpick, then use wick or a desoldering pump to remove excess solder |
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ph4nt0m
Joined: 01 Jan 2018
Posts: 812
Location: Europe
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| Posted: Wed May 18, 2022 3:20 pm Post subject: |
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| shrad wrote: | | what about just desoldering the component? seriously... not that hard to do, just put a blob of solder and remove the thing with a toothpick, then use wick or a desoldering pump to remove excess solder |
Desolder what? It's a short inside a BGA south bridge.
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shrad
Joined: 16 Sep 2020
Posts: 73
Location: Belgium
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| Posted: Wed May 18, 2022 4:00 pm Post subject: |
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| misread sorry, I thought it was a regulator... |
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mavroxur
Joined: 06 Jul 2005
Posts: 1192
Location: Wichita Falls, TX
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| Posted: Fri May 20, 2022 6:27 pm Post subject: |
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| ph4nt0m wrote: | It's possible to "repair" those failed boards with ICH4 and ICH5 south bridges. Locate VCCSUS1_5 which is shorted to earth and apply 3.3V to burn it out completely. Boards will POST again and work like usual without any USB ports available. Sometimes AC'97 audio or IDE/SATA fuctionality may die as well, but it's still better than just a dead board.
Don't use internal USB ports on such boards routed to front panels and they will be fine. If you absolutely have to, use an external USB hub. |
HA! Man, my kind of work-around
*high five* |
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Wasmachineman_NL
Joined: 04 Jul 2019
Posts: 988
Location: Netherlands
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| Posted: Fri May 27, 2022 9:43 am Post subject: |
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| Bump with pricedrop. |
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