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| Amiga Hardware Issues and discussion This forum is dedicated to the discussion and resolution of issues related to Classic and Next Generation Amiga hardware. Got a problem with a piece of hardware? Click to speak. |
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03-03-2012, 09:39 AM
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#1 | ||||||||
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Defender of the Faith
Join Date: Oct 2005
Location: Malta
Posts: 1,207
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A500 keyboard fix ?
Some keys are not working
I pulled the keyboard apart and the membrane looks good, no darker patches or anything. I cleaned it up anyway. The keyboard controller board also looks fine. What could be wrong ?
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A1200HD- Blizzard 1230IV / 64Mb / Kick 3.1 / OS 3.9 / 20GB HD / Indivision A2000 Rev4.4 - Stock (But with ECS chipset) / 1MB Chip mode CD32 - Stock (W/ 2 CD32 Controllers] A500 Plus - 68000 @ 7Mhz / 2MB Chipmem / 2Mb Fast ram / 2.04/Kick1.3 / A590 A600HD - 2MB Chip / 8MB Fast / 2GB CF HD / Kick 3.1 Various Spare A500's and A500 Plus's PowerMac G4 1Ghz (MorphOS / Leopard) http://amigamap.com/user/172 |
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03-03-2012, 09:46 AM
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#2 | ||||||||
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Defender of the Faith
Join Date: Oct 2005
Location: Malta
Posts: 1,207
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Re: A500 keyboard fix ?
Its a row of keys not working.
9,O,L,>.
__________________
A1200HD- Blizzard 1230IV / 64Mb / Kick 3.1 / OS 3.9 / 20GB HD / Indivision A2000 Rev4.4 - Stock (But with ECS chipset) / 1MB Chip mode CD32 - Stock (W/ 2 CD32 Controllers] A500 Plus - 68000 @ 7Mhz / 2MB Chipmem / 2Mb Fast ram / 2.04/Kick1.3 / A590 A600HD - 2MB Chip / 8MB Fast / 2GB CF HD / Kick 3.1 Various Spare A500's and A500 Plus's PowerMac G4 1Ghz (MorphOS / Leopard) http://amigamap.com/user/172 |
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03-03-2012, 09:46 AM
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#3 | ||||||||
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Kindred of Babble-on
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Re: A500 keyboard fix ?
CAPS LOCK not flashing at power up? -> no power or dead controller
CAPS LOCK stuck after pressing a few times -> bad data connection to mainboard some keys not working -> depending on layout, bad key contacts, bad matrix lines or bad controller PS: 9, O, L - definitely a bad column line, check/measure the common line of those keys running to the controller IC, it's probably bad somewhere (or the solder point) Last edited by Zac67; 03-03-2012 at 09:51 AM.. |
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03-03-2012, 12:29 PM
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#4 | |||||||||
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Defender of the Faith
Join Date: Oct 2005
Location: Malta
Posts: 1,207
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Re: A500 keyboard fix ?
Quote:
Thanks
__________________
A1200HD- Blizzard 1230IV / 64Mb / Kick 3.1 / OS 3.9 / 20GB HD / Indivision A2000 Rev4.4 - Stock (But with ECS chipset) / 1MB Chip mode CD32 - Stock (W/ 2 CD32 Controllers] A500 Plus - 68000 @ 7Mhz / 2MB Chipmem / 2Mb Fast ram / 2.04/Kick1.3 / A590 A600HD - 2MB Chip / 8MB Fast / 2GB CF HD / Kick 3.1 Various Spare A500's and A500 Plus's PowerMac G4 1Ghz (MorphOS / Leopard) http://amigamap.com/user/172 |
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