Date: Fri, 31 Aug 2001 09:16:10
From: "neil barnes" <[EMAIL PROTECTED]>
Subject: Re: What to do with my 70CT
Matt,
Just one suggestion I made earlier but you may have missed: on the
motherboard there are several fuses scattered around. They're not obvious -
square section things about 3mm across and 6mm long - but they're marked 3A
and 5A (from memory). It would seem logical that one of these protects the
screen power...you can test with a multimeter in ohms, anything more than
.2ohm or so - measured in both directions - will indicate a broken one. It
will *not* be obvious to the naked eye.
You may have to remove the heatsink, but the fuses are all on the top AFAIK
- I think there are three or four.
Repairing with an exact replacement may not be easy, but soldering a link of
fuse wire of appropriate size should be reasonably easy, if you find a dead
fuse.
Regarding new motherboards, forget it :( You're better off searching for a
*cracked* screen machine - or a complete working replacement - remember you
don't need floppies or batteries or hard drives so you might get a good
deal. Trevor can tell you horror stories there though...
Neil
>Date: Fri, 31 Aug 2001 03:09:17 +0000
>From: "Matthew Hanson" <[EMAIL PROTECTED]>
>Subject: What to do with my 70CT
>
>I'm sorry I haven't been contributing to the list much as of late folks.
>Have just had so many things to deal with lately.
>
>I wonder if anyone has any suggestions for just what I can do at this point
>with my 70CT. For those of you who may not have followed the thread on my
>70CT LCD problems, here's the problem as it stands:
>
>I had thought that the LCD on my 70CT had blown out, since a couple months
>back the screen blinked quickly a few times, and then went black. After
>doing some testing, I found that my 50CT and 70CT case topsides with lid,
>LCD and all components in the lid, both work fine on my 50CT bottom end
>with
>the motherboard, hard drive, battery and the rest of the guts of the
>system.
> Both screens light up and work fine on the 50CT bottom end. Neither top
>ends with lids and LCDs will operate with the 70CT bottom end. The screen
>remains fully black while the systems boot into Windows without any sign of
>life from the LCDs in light or darkness. I have to shut Windows blindly
>with keys.
>
>I've looked over the MB components that are visible without removing the
>heat sink and gray mylar, and didn't see any sighs of overheating or blown
>out components.
>
>I WAS able to connect and get working an external monitor to the 70CT via
>the port extender. So the system gets the external monitor working, but not
>the internal LCD. It seems to me that some component on the MB , most
>likely a chip, has been damaged.
>
>I'm wondering if I have any options at this point. Are there services that
>might be able to analyze and repair the unit for something less than the
>price of another used 70CT? I don't presume that there are many new
>replacement MBs for these puppies... as the CPUs are soldered onto them,
>and
>they've be expensive as all get out. A new MB is probably worth more than
>buying another used 70CT. Is it possible that anyone has a used 70CT MB
>they'd like to sell (there are probably a lot of you looking for this)...
>or
>I am just looking at keeping what I have as spare parts, and looking around
>for another 70CT?
>
>Thanks for any suggestions.
>
>Matt
>
>
>
>
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>
>
>
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