Re: Lenovo Thinkpad R61I Installing Windows with 4gb causes BSOD's
Posted on Yesterday, 11:12
Does your R61 have a dedicated graphic chip? The T-models had heavy issues with ATI chips (defective video RAM), the Nvidias had the "Nvidia-bug".
Re: Lenovo Thinkpad R61I Installing Windows with 4gb causes BSOD's
Posted on Yesterday, 09:26
I have several T61 and this issue never occured, they all run and got installed with 4GB (Win and Debian dual-boot). Middleton BIOS fixes whitelists and enables SATAII as far as I remember. Is your Windows 7 install media beyond all doubt / free of any corruption? Did you try a x64 setup?
Re: M915i jumper setting for P24T(Pentium Overdrive)?
Posted on Yesterday, 09:02
majestyk wrote on Yesterday, 09:01: 385387386 wrote on 2024-04-23, 23:49: majestyk wrote on 2024-04-23, 16:04: And I´m confident 1MB L2 cache will be capable to cache the whole lot of 4MB RAM 😉 Maybe 256MB RAM will also covered 😉 ...in write-back mode, of course!
Re: M915i jumper setting for P24T(Pentium Overdrive)?
Posted on Yesterday, 09:01
385387386 wrote on 2024-04-23, 23:49: majestyk wrote on 2024-04-23, 16:04: And I´m confident 1MB L2 cache will be capable to cache the whole lot of 4MB RAM 😉 Maybe 256MB RAM will also covered 😉 ...in write-back mode, of course 😒
Re: No beep codes from motherboard
Posted on Yesterday, 07:32
What´s that black stain supposed to be? Filename IMG_0701a.JPG File size 37.47 KiB Views 66 views
Re: 386 board CMOS problem
Posted on Yesterday, 06:32
Have you removed the socket of the keyboard controller and the bottom 2-4 RAM sockets? In most cases there are also interrupted traces to be found. The RTC not only needs battery voltage, but also has a reset circuitry and more to make it work properly.
Re: M915i jumper setting for P24T(Pentium Overdrive)?
Posted on 2024-04-23, 16:04
And I´m confident 1MB L2 cache will be capable to cache the whole lot of 4MB RAM 😉
Re: Pentium PRO?
Posted on 2024-04-23, 11:12
eisapc wrote on 2024-04-23, 07:54: Simirar to socket 4 the boards are overpriced due to their rareness and so are coolers and VRMs. But the (new) VXI VRMs I recommended for € 6.50 each aren´t exactly overpriced, I would say.
Re: Pentium PRO?
Posted on 2024-04-21, 17:56
Is it still possible to find correct VRM modules for these boards - sure I have an old Siemens board somewhere, just no processors (easyish?) or VRMs (hard?!) At the moment you have the chance to get some really cheap, it´s article number 135001060040 on Ebay. These VXI VRMs are top quality, but …
Re: M912 with 1 MB cache
Posted on 2024-04-21, 15:24
It could be some Mask-ROM with a forged AMI sticker 🙁 Is the chip made of ceramic or plastic? ...if it´s not troublesome, it´s simply not PC-Chips.
Re: Problem with DTK PEM-4036YB (PEM-0036Y), no post
Posted on 2024-04-21, 11:40
...second check today, most likely I need glasses - damn, it is 80 MHz. I need to get a 50MHz one since I do not have a scoketed 40MHz CPU. This will take some time to get in. Thank you for pointing this out, I was not keeping enough attention to this... I suspected that when I saw this: …
Re: Problem with DTK PEM-4036YB (PEM-0036Y), no post
Posted on 2024-04-20, 19:35
What about the oscillator - have you checked it´s 50.000 MHz, not 80.000MHz?
Re: AT Ppower Supply with lost caps
Posted on 2024-04-20, 09:38
Everybody Chyang Fun tonight... Suggestion: The 3 larger ones (12mm?) -> 2200µF, 16V the 2 smaller ones (10mm?) -> 1000µF, 16V And some good cleaning is recommended.
Re: Motherboard Repair - PCChips M912 (FuGu Tech MBM-686FG) CPU Power Transistor
Posted on 2024-04-20, 05:41
Just my two cents about the resistor: I think it´s clearly red/black/black/red/ brown = 20KOhm, 1% Did you measure the resistance with one leg open? I doubt it´s even broken. Q4 is probably an adjustable shunt (TL431) and should also be checked. Resistors in the 20KOhms range for adjusting the …
Re: Corrupt characters with ELSA Winner 1000 EISA / ISA Graphics Card
Posted on 2024-04-19, 20:46
Thanks! Finally the different versions are understandable. Note that the date code of my P-chips is 1995 (as opposed to the original from 1993) - PCI had been introduced in the meantime. One of the 3 245 bus transceivers ( the right one) had to be replaced. It must have exploded and it had a hole at …
Re: Corrupt characters with ELSA Winner 1000 EISA / ISA Graphics Card
Posted on 2024-04-19, 18:35
I think the linked issue was mainboard related, I had tested my ELSA card in different mainboards both ISA and EISA - always the same problem. Besides that I found the graphics chip to become quite hot in intervals for a few seconds - depending on whatever. Suspecting a broken chip I searched for a …
Re: Problem with DTK PEM-4036YB (PEM-0036Y), no post
Posted on 2024-04-17, 18:37
tsalat wrote on 2024-04-17, 18:04: ...IRQ, DRQ, ... - 6-8Mohm... Are you sure, with the red probe connected to ground??
Re: Problem with DTK PEM-4036YB (PEM-0036Y), no post
Posted on 2024-04-17, 15:48
The tri-state buffers (F244) are probably for the ISA address lines. The typical incidents, for example when someone pulls an ISA card while the system is still on affects mainly non-buffered signals like IRQ, DRQ, DACK - lines. Desoldering any circuits without prooving them defective before, ist …
Re: Supermicro P6DNE - Eaten by Varta´s barrel bomb -> back from the dead
Posted on 2024-04-16, 07:45
I dont trust any brand. I dont leave ANY battery in a computer once it goes to storage. I support to strictly abide to this golden rule! At least the 1/2 or 2/3 AA cells are easy to remove. I use them in cases when the mainboard clock refuses to run properly at 3V (CR2032), even after removing non- …
Re: FIC PA 2002 is not saving BIOS settings
Posted on 2024-04-16, 07:33
The fact that the clock keeps on running indicates the 3V voltage reaches the VIA southbridge (VT82C576M). It still w0n´t save anything to the integrated CMOS memory. I would think of either some issue with the ISA bus or a defective southbridge. Do different kinds of ISA cards work correctly - like …
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