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Date: 13 Sep 2007 11:37:28
From: LF
Subject: Presto Revival
In the past, I was able to revive my Presto by descaling (with citric
acid). IIRC, this fix worked when the lights came on briefly, but then
went off.

Recently, the lights failed to come on at all -- no matter how hard I
pressed the buttons on the front panel. I figured the Presto was
toast, and almost purchased a Technivorm. No need, the Presto is now
working perfectly.

The malfunction was mechanical: the buttons on the front panel failed
to make contact with the circuit board. Most likely, I caused this by
repeatedly pushing the buttons too hard, in an attempt to get the
Presto working (during some of the "light came on briefly, but then
went off" episodes).

The fix took about 5 minutes.
I turned the Presto upside down, removed the little gray feet that
cover some of the screws, and unscrewed the phillips head screws that
hold the Presto together. In hindsight, I think I probably only
needed to remove two screws -- the one closest to the front, and the
one closest to the rear. Then I was able to push the circuit board
back into proper position -- close enough to the front panel to make
contact with the buttons. Plugged it in briefly for a quick test, and
reassembled.

Got to go now. My wife's coffee finished brewing in the Presto.

Best,
Larry





 
Date: 20 Sep 2007 03:35:50
From: LF
Subject: Re: Presto Revival
> Did this also fix the momentary power-on, or was that unrelated and just
> excess scale?

Dear ScratchMonkey,

I don't really know. The Presto continues to work perfectly. I
suspect that some of the earlier intermittent problems were milder
symptoms of the same issue: the buttons on the outside not making
good contact with the switches inside. I use RO (reverse osmosis)
filtered water, so scale build up is probably slower for me than for
some others.

Best,
Larry



 
Date: 19 Sep 2007 06:59:09
From: ScratchMonkey
Subject: Re: Presto Revival
LF <fieman@gmail.com > wrote in news:1189683448.304927.278150@
57g2000hsv.googlegroups.com:

> The fix took about 5 minutes.
> I turned the Presto upside down, removed the little gray feet that
> cover some of the screws, and unscrewed the phillips head screws that
> hold the Presto together. In hindsight, I think I probably only
> needed to remove two screws -- the one closest to the front, and the
> one closest to the rear. Then I was able to push the circuit board
> back into proper position -- close enough to the front panel to make
> contact with the buttons. Plugged it in briefly for a quick test, and
> reassembled.

Excellent!

Did this also fix the momentary power-on, or was that unrelated and just
excess scale?