Replacing motherboard in T42

[alecm3]

Apparently not all T42s come with Dothan CPU.
Mine (bought in Sept 94) came with SL6F9, which according to http://en.wikipedia.org/wiki/List_of_In ... processors is a Banias processor.

My motherboard is 93P4156.
Recently, the soldering of ATI 7500 GPU chip failed on the motherboard (horizontal stripes in LCD, then freezing), so I bought a T41 93P3310 motherboard on eBay.

When I put my CPU in this motherboard, I could never get to BIOS screen: I got some video garbage (both with LCD and with external monitor). I assume this motherboard is dead.

My questions:
1. Is there a chance that 93P3310 T41 motherboard was incompatible with SL6F9 Banias CPU from T42? Could this mainifest itself as video garbage?

2. Can I use a T40 or T41 motherboard with SL6F9 CPU WITHOUT updating BIOS? What motherboards should I look for? Since I am buying on eBay, I do not have the original CPU, so updating BIOS is not an option until I successfully boot with my own CPU.

[richk]

If you are really in San Francisco, I can lend you a Dothan CPU to try. It is SL7GL. Send me a private message with phone number or email address

[dyoes]

CPU should work no problem at all.

I had a T41 w/ ATI 7500 32mb and the Banias 1.6 cpu. The 400mhz fsb banias and dothan will go into the T40,T41, and T42. T43s uses the 533fsb cpu.

My mobo starting acting wierd and freezing if I moved the lcd or laptop. Seems like a lot of these T4X mobos with the ATI 7500 32mb are dropping like flies. Im starting to have to retract all my praises about the T4X.

You sure its all connected right? The lcd cable can be kind of funny connecting onto the mobo...

Could be a pos mobo some other guy had a similar problem and dumped on you.

[alecm3]

CPU should work no problem at all.

I remember seeing in another thread that when they put Dothan in a T40 motherboard 91P... part number I think, it run at like 600MHz always, until they updated BIOS and EC.
But I wonder if that is the extent of incompatibility between Banias and 400Mhz FSB Dothan for older motherboards?

You sure its all connected right? The lcd cable can be kind of funny connecting onto the mobo...

Could be a pos mobo some other guy had a similar problem and dumped on you

Looks like it was defective: I used the same setup with my old mobo and it worked (no laptop case, no fan, no hard drive, just mobo + CPU + external monitor + powerjack: it showed the BIOS screen just fine, although the CPU did get hot, so I had did not keep it on longer than 30 sec.

[dyoes]

CPU should work no problem at all.

I remember seeing in another thread that when they put Dothan in a T40 motherboard 91P... part number I think, it run at like 600MHz always, until they updated BIOS and EC.
But I wonder if that is the extent of incompatibility between Banias and 400Mhz FSB Dothan for older motherboards?

Well the Im sure the T40,T41,T42 all could have either a Banias or donthan depending which model and type you had, since its the same socket and 400fsb Id be suprised if it didnt work but saying that you could have some minor issues with an older board with old bios and newer chip.

Sucks about that board you just bought. You should try to get a nice T42P mobo.