Re: Waterlogged monitor

[mjmahon@aol.com (Michael J. Mahon)]

bobo_snyder@hotmail.com advised (in part):

>as for the monitor, i would have to say you could do the same things with
>dissembling it and washing it in water HOWEVER!!!!!! a monitor will store up
>to something like 100,000 volts in the tube which might decide to follow the
>path of least resistance which just might happen to be the water that you
>decide to wash it out with.  honestly i would just keep looking for a good
>old composite monitor such as one of the commodore composite monitors or a
>magnavox rgb 80 (i found 3 of them in the wild for 3 bux a piece).
>
>probably the voltage has drained out of the monitor with the water that has
>gotten into it so far, but still i don't think i would attempt it.

FWIW, the actual anode voltage is in the 12kv to 20kv range, and is
easily grounded at the anode connection (carefully).

The major issue will be the purity of the water used to wash it (and the
computer).  If the water is deionized or distilled, you don't need to be
nearly as careful with using air to get rid of it--just let it evaporate.

A bigger issue is the soluble and "clumpable" dirt on the board getting
washed into places where it will still be deposited when the board has
completly dried.  "Dust mush" is somewhat conductive, and could be
especially problematic around high voltages (in the HV section of the
monitor) and in high impedance circuits (none in the computer, but
perhaps a few in the monitor).  Just be sure to rinse it several times
and to get rid of all the dirt, etc.  And let it dryyyyy....

-michael

 Email:  mjmahon@aol.com
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