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

Acer M11A Socket 8 motherboard PS/2 keyboard issues

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First post, by vmr_

Posted on 2019-06-07, 19:28

vmr_ Offline

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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.

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

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Reply 1 of 5, by quicknick

Posted on 2019-06-07, 19:41

quicknick Offline

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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

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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

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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

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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

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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.

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