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CMOS/Clock Batery in a Compaq Prolinea 575


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#1
dtroisi

dtroisi

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I would appreciate some help! I've ordered, and received a Compaq Prolinea 575 CMOS/Clock battery. It is a Rayovac 840, 4.5v Alkaline Battery. When I opened my machine, I located a schematic showing the Location of an "internal Clock/CMOS battery" (a coin shaped lithium battery currently in place). The schematic also shows the location for connecting an "external Clock/CMOS battery" connector that would seem to accommodate the battery I received. There are instructions on the schematic for jumper positions for either "internal" or "external" Clock/CMOS battery (currently positioned for the "internal" battery) with instructions for positioning for an "external" battery.
It would seem, by changing the jumper arrangement for an "external" battery and hooking up the 4.5v alkaline battery, I should be in business and the dead lithium battery would be by-passed. Can someone confirm whether this is so? I have not been able to get help elsewhere.
Thank you,
Dino R. Troisi
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#2
warriorscot

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Why dont you just put your new battery in internally and save the hassle.
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#3
dtroisi

dtroisi

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For whoever may be interested, I have installed the connected 4.5v Alkaline CMOS/Clock replacement battery and moved the jumper as instructed on diagram. The jumper move by-passes the dead Lithium battery on the board and activates the leads for the Alkaline battery connection. I've done it, and all is well again. All systems are go. There apparently are some older boards that allow you to make the fix this way. I read somewhere some of the older boards have the CMOS/Clock battery hard wired to the board making removal virtually impossible.

Anyway I hope this experience is helpful to someone.
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