Question about Matsonic MS8137C Motherboard

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CMOS Battery? The CMOS battery is the round battery on the mother board, correct? If so, I replaced it and still nothing. I guess I should try replacing the power supply now as well and perhaps both of them being new is the answer?

Posted by Theocanj on


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I am going to go out on a limb here and infer that when you try to power up the machine you get nothing - no lights, no display no beep. If this is the case then this would be symptomatic of a failed power supply, however the problem may not start or end there it is also sympomatic of a failed MB.

A good power supply will sacrafice itself to protect reliant components if there is a power spike, a "budget" one will pass the damage on.

In answere to your first question about the CMOS battery you are correct.

Basicaly buy a new power supply and don't buy budget but having done that don't be suprized if the MB has gone as well. Worse news is if you do have to change the MB depending on the age of your system you may have replace the CPU as well.

Sorry about the bad news, all I can offer on the positive side is that electrical equipment is usualy covered under a home and contents insurance package or a lease/rental agreement.

Hope this helps.

Posted on Jan 05, 2009


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Wont let me type bios password

SORRY ~ you did NOT include your model number! DANG IT I wish fixya would make that MANDATORY!

Now I must use a VERY broad brush to help!

Have a NEW and FRESH CR2032 Battery ready... because it's a dang shame to finally get access to the battery and not replace it with a new one!

1. Remove your laptop battery and power supply or AC connector.

IF YOU Break one of the TINY CMOS battery "retaining clips" and your MOTHER BOARD IS TOAST!

2. OPEN your Toshiba and CAREFULLY REMOVE your CMOS BATTERY... they usually look like a 50 cent piece. One clip (shown to the RIGHT in Photo 1) GENTLY pulls aside... the battery pops out. IF you feel the slightest resistance STOP and try the other clip!

Some CMOS batteries have tiny connectors and sometimes they are soldered in: See Photo 2 ONLY and also note the ACID leak!

Those tabs are spot-welded to the battery... Try your best to AVOID stress at the tab and mother board entry point. With GREAT CARE, the metal TABS on the battery body can be torn from the battery body. SOLDER your replacement battery to what is left of the tabs. This saves PULLING the entire mother board ~ NO FUN!

3. After removing the battery ~ With great care, touch or jumper the + Clip with the - Clip to help discharge any remaining voltages (in electrolytic capacitors).

4. Wait 5 minutes and jump the * and - clips again for a few moments.

5. Now install your FRESH battery and put things back together.

This SHOULD TOTALLY RESET your CMOS including your CMOS PASSWORD. It provides a fresh CMOS battery for your system! Be ready to set the DATE and TIME in your CMOS setup too.



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