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Blink of death.
Blink of death.
Hi everyone, I have a T21 with XP which has been very reliable for years, but when I switched on today I got what I believe is known as the 'Blink of death' (a quick blink of the hd light) Is this terminal? I removed the keyboard, checked that the fan was free, checked the cmos battery, re-assembled but still only the 'Blink'. Is there a fix other than the dustbin.
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Re: Blink of death.
Here's the latest of what I know of about BoD (could be superseded by a search of the forum's posts as I haven't kept up to date on this matter that much):
- It's terminal in the sense that once you have it, it doesn't really fully go away on its own.
- You might find that removing all power from the system (battery & AC) and waiting a couple of days will restore the T21 to operation again.
- The problem is thought to be with one or more of the power controller chips detecting the wrong voltage and/or current at power on and preventing the system from fully powering up.
- The root cause most likely is with the passive components (resistor/capacitor) rather than the power controller itself; i.e., changing the chip may not fix the problem.
- Swapping out the motherboard may simply delay the return of the problem as the replacement board could also be "infected" with this issue.
- It's terminal in the sense that once you have it, it doesn't really fully go away on its own.
- You might find that removing all power from the system (battery & AC) and waiting a couple of days will restore the T21 to operation again.
- The problem is thought to be with one or more of the power controller chips detecting the wrong voltage and/or current at power on and preventing the system from fully powering up.
- The root cause most likely is with the passive components (resistor/capacitor) rather than the power controller itself; i.e., changing the chip may not fix the problem.
- Swapping out the motherboard may simply delay the return of the problem as the replacement board could also be "infected" with this issue.
Ray Kawakami
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
NOTE: All links to PC-Doctor software hosted by me are dead. Files removed 8/28/12 by manufacturer's demand.
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
NOTE: All links to PC-Doctor software hosted by me are dead. Files removed 8/28/12 by manufacturer's demand.
Re: Blink of death.
I had read somewhere that someone used a pullup resistor affixed to said chip to fix the issue. Google around for it.
Here is one search that could find a solution...
https://www.google.com/search?q=Blink+o ... p+resistor
Here is one search that could find a solution...
https://www.google.com/search?q=Blink+o ... p+resistor
IBM T20 (2647-86U) - 900MHz/512MB - 2x8GB CF - Atheros AR5413 mini-pci - #! IBM T23 - 16GB CF - #!
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IBM T42 (2373-JTU) - 1.7GHz/1GB - HM160HC IBM 560x - 233MHz/96MB IBM 701c
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