Acer M11A Socket 8 motherboard PS/2 keyboard issues \ VOGONS

Acer M11A Socket 8 motherboard PS/2 keyboard issues

Topic actions

First post, by vmr_

Posted on 2019-06-07, 19:28

vmr_ Offline

Rank Member

Rank: Member
Posts: 125
Joined: 2018-09-06, 08:14

Hi,

Got today a good looking Acer M11A Socket 8 motherboard. All looks good, it does POST and get video signal, except the PS/2 keyboard is not detected. Keyboard works on another system from that era.

Tried USB keyboard with PS/2 adaptor - no joy either.

The motherboard has 2 PS/2 connectors, and none seems to work - none of the two keyboards are not detected.

The attachment IMG_20190607_194916_1_19.jpg is no longer available

Any ideas or suggestions what could be damaged, and how this can be fixed? is replacing the PS/2 sockets an option?

Retro builds & sandbox
IBM XT 5160 | 286 | 386 | 486 | S4 SI5PI AIO & S4 Batman + P60 SX828
S8 & PPro 200 | SS7 FW 5VGF & Asus P5A & AOpen AX59PRO K6-III+ 550MHz
Asus K7M Athlon 1Ghz GDF | Abit SH6 Pentium III 1GHz SL4KL...

Reply 1 of 5, by quicknick

Posted on 2019-06-07, 19:41

quicknick Offline

Rank Oldbie

Rank: Oldbie
Posts: 641
Joined: 2017-10-30, 23:53
Location: RO

Do the LEDs on your keyboard at least blink at power up? If not, the fuse F1 (at the left of the PS2 ports on your photo) might be blown.

Reply 2 of 5, by vmr_

Posted on 2019-06-07, 19:46

vmr_ Offline

Rank Member

Rank: Member
Posts: 125
Joined: 2018-09-06, 08:14

no leds blink at power up. That green fuse reads F1 3A / 125V. will test it with the multimeter for continuity - unless I have to desolder it to verify it.

wondering where to look for a replacement - any suggestions?

Reply 3 of 5, by vmr_

Posted on 2019-06-07, 20:00

vmr_ Offline

Rank Member

Rank: Member
Posts: 125
Joined: 2018-09-06, 08:14

yup - continuity test fails on that fuse.

Wondering if the fuse is a quick blow one, or a slow blow? Links from Farnell below:

https://ie.farnell.com/multicomp/mcpfp-3a-125 … w-3a/dp/1566032

https://uk.farnell.com/multicomp/mcpsp-3a-125 … w-3a/dp/1566048

Reply 4 of 5, by luckybob

Posted on 2019-06-07, 23:10

luckybob Offline

Rank l33t++

Rank: l33t++
Posts: 5051
Joined: 2009-04-30, 04:43

go quick

I'm curious to know why the usb didnt work.

It is a mistake to think you can solve any major problems just with potatoes.

Reply 5 of 5, by vmr_

Posted on 2019-06-11, 09:22

vmr_ Offline

Rank Member

Rank: Member
Posts: 125
Joined: 2018-09-06, 08:14

@luckybob - what USB?

did not try with a PCI-to-USB card adapter, but that is my next option - if PS/2 connector keeps failing.

Go to top of page Go to top of page

Back to General Old Hardware