No power, battery charged.

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fleamourian · #1 Post by **fleamourian** » Mon Aug 18, 2008 4:06 pm

I thought I'd trawl the collective memory of the forum.

My mates T21 type 2647 4AG will not boot. When pressing the power button the far left icon (hard drive?) flickers for the briefest of moments, nothing else. The battery is fully charged, it aint the battery, laughs.

I have stripped my own T21 before so am comfy working under the hood, any pointers though? All possible solutions/further trouble shooting tips welcome.

fleamourian · #2 Post by **fleamourian** » Mon Aug 18, 2008 4:29 pm

A little probing under the keyboard revealed a loose cable, the main ribbon that connects to mobo. I suspect some handling the laptop with only one hand.

Boots a good'n now!

#3 Post by **rkawakami** » Mon Aug 18, 2008 5:00 pm

Interesting.... your initial description sounds like the dreaded "Blink of Death" (BoD: hard drive LED flashes 1/10 second when power button is pushed, no other signs of life). Even if re-seating the LCD ribbon cable seemed to help straight away I would still have your friend keep a note if (or when) the T21 does this again.

The BoD is an intermittent problem. Leaving the system alone for some time usually allows it to start up again. My experience has been that if you remove all power (AC adapter and main battery), then it recovers a little bit faster. It's not known what triggers the problem, nor exactly what component-level replacement will permanently fix it. Some people have appeared to eliminate the problem by replacing one or more of the power conditioning chips on the motherboard (Analog Devices ADP34xx series) but others that have tried that had no luck.

sarbin · #4 Post by **sarbin** » Mon Aug 18, 2008 5:08 pm

^^^
+1
my t22 took two trips to the depot, for planar replacements, to fix it.

fleamourian · #5 Post by **fleamourian** » Tue Aug 19, 2008 12:37 pm

I hope not!!!

But I have noticed that the main ribbon cable has no metal retainer to affix it to main board, preventing it coming loose when the case flexes. It was shipped this way. Does anyone have a spare? I am willing to pay a reasonable amount.

#6 Post by **RealBlackStuff** » Tue Aug 19, 2008 5:36 pm

That's the part 26P9178.
On the web, anywhere from $29.- and up., + shipping.
Seeing you live in the UK, I can send you one for $10.- shipped.
Payment via PayPal.
PM me if interested.

fleamourian · #7 Post by **fleamourian** » Thu Sep 25, 2008 3:58 pm

It does indeed appear to be the dreaded BoD.

No power, battery charged.

No power, battery charged.

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