Hello
I have an old 1998 PS/2 keyboard ( = Regular flex circuit "membrane" keyboard ) that has a microprocessor ( black bulb with multiple golden feet ) which tiny feet about 6 out of 46 pcs total are loose. I think this is the fault that the keyboard is not working anymore at all.
-> I used an microscope and saw a glue layer spread though those legs. Some legs are free from that glue probably due to old age 1998. Keyboard used to work few 2-3 years ago.
-> I already used rubber eraser to clean those corroded brown/black connector surfaces to silver colored.
-> Anyone know identify which microprocessor is it and how it functions ? Otherwise the circuitry is very simple and there are only a few components on the flex board.
-> How to glue those legs to the surface and what brand name glue/paste should I use ? I need a tiny pipet or such because legs are 0.5-1.0mm wide and close together.
-> Any advice helps I'm not an professional electronic worker or such. So is this job a total failure ?
Photo of the microprocessor: (RESIZED IMAGE AS A ATTACHMENT BELOW POST)
http://i162.photobucket.com/albums/t278/1231134/20180107_110626_zpskcmho6gc.jpg
Link to my question on other forum:
https://forum.thinkpads.com/viewtopic.php?f=58&t=125361
Germany Siemens Nixdorf PG720p1 1998 All-in-One PC ( Laptop )
Keyboard circuitry data:
TEMIC
321 859
321 700
V26817-B70-V502-02
K7 K8 K9 K0 KN KD
CE AE DF GB
I have an old 1998 PS/2 keyboard ( = Regular flex circuit "membrane" keyboard ) that has a microprocessor ( black bulb with multiple golden feet ) which tiny feet about 6 out of 46 pcs total are loose. I think this is the fault that the keyboard is not working anymore at all.
-> I used an microscope and saw a glue layer spread though those legs. Some legs are free from that glue probably due to old age 1998. Keyboard used to work few 2-3 years ago.
-> I already used rubber eraser to clean those corroded brown/black connector surfaces to silver colored.
-> Anyone know identify which microprocessor is it and how it functions ? Otherwise the circuitry is very simple and there are only a few components on the flex board.
-> How to glue those legs to the surface and what brand name glue/paste should I use ? I need a tiny pipet or such because legs are 0.5-1.0mm wide and close together.
-> Any advice helps I'm not an professional electronic worker or such. So is this job a total failure ?
Photo of the microprocessor: (RESIZED IMAGE AS A ATTACHMENT BELOW POST)
http://i162.photobucket.com/albums/t278/1231134/20180107_110626_zpskcmho6gc.jpg
Link to my question on other forum:
https://forum.thinkpads.com/viewtopic.php?f=58&t=125361
Germany Siemens Nixdorf PG720p1 1998 All-in-One PC ( Laptop )
Keyboard circuitry data:
TEMIC
321 859
321 700
V26817-B70-V502-02
K7 K8 K9 K0 KN KD
CE AE DF GB
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