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701C no beep / no post

Older ThinkPads from the 300, 500, 600, 700 Series, iSeries, Transnote etc.
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Franchute13
Posts: 43
Joined: Wed Aug 01, 2018 6:24 pm
Location: Buenos Aires, Argentina

701C no beep / no post

#1 Post by Franchute13 » Thu Mar 30, 2023 7:15 am

Hello.

I have a 701c that is behaving strangely.
The machine was working properly. I was putting and removing the HDD to try to install the OS on another computer.
In one of these tests, the computer stopped working correctly.
When turned on it makes a long beep and then a short one. The screen does not turn on and nothing can be seen on it.
I disarmed all the equipment, put it back together and now it doesn't do anything, not even a beep.

Any suggestions?

Ghostdog
Posts: 22
Joined: Thu May 16, 2019 2:22 pm
Location: Russia, Obninsk

Re: 701C no beep / no post

#2 Post by Ghostdog » Sat Apr 01, 2023 6:26 pm

Hi, try to replug display cable, it helps sometimes.

Franchute13
Posts: 43
Joined: Wed Aug 01, 2018 6:24 pm
Location: Buenos Aires, Argentina

Re: 701C no beep / no post

#3 Post by Franchute13 » Thu Apr 06, 2023 8:13 pm

Hello.
Ghostdog, thanks for responding.

I have some news.

After disassembling everything, cleaning the connectors and reassembling, now the machine turns on and shows a screen.
But I'm having problems that I didn't originally have.
It is giving me the following errors:

702 (System board failure)
1104 (serial port error)
611 (system board failure)

When executing the BIOS Diagnostic, the mother says OK, Ram OK, PCMCIA OK,
but it fails in Floppy Drive (I don't have one anyway), Modem, Infrared.
Any suggestions on what to check?
Is there a schematic for this machine?

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