Service manual emailed.

Steve Bell

On 1/5/04 3:35 pm, in article , "Andrew Kibler"
wrote:

This is a reply to a no-reply email I got concerning this issue:

Steve,
Thank you for your insightful and courteous reply. I do have a little
experience at fixing monitors on the side, as I have a degree in
electrical engineering. The focus and convergence of these are still
good, and in the future by adjusting the focus internally I think there
is still some good life in the tube yet. I'll swap out the power
supplies and MDB to see which is the culprit. So far I have spent $0
total on these monitors, so it's an interesting exercise anyway. as a
grad student I don't have the cash to buy what I'd really like. When it
turns off the first time it's not the geometry, but the position LED
that is on.

I also have a newer Applevision 850 (M3705) that appears to be fine
except for a discolored possibly burnt up eeprom on the crt board B67AB
93c66 from National. Is this common for this model and is it
repairable?

My email address accepts attachments up to 50MB, so that should be no
problem. Thanks again!

Andrew



Andrew Kibler wrote:

Hello, I have two m1823 20" monitors, very sturdily built that I have
been using past few years. One has had minor display problems with
inward arced lines on the sides and dimness and these improved when I
smacked it on the side. Thinking it was a poor connection problem I
took it outside yesterday and blew all of the dust out of it (it was
coated everywhere.) and re-seated most of the connections. That fixed
those arcs and the dimness problem and for a day it was perfect and
bright. Then suddenly 'click' and the picture was gone, the power and
standby lights are flashing and the rightmost light of the 5 on the left
is on. When I push the power button again (without cycling power to the
monitor), it might work for a minute or two, then 'click' off again this
time with the center light of the five being lit & the two power lights
flashing. I can hear the HV powering up usually. (static) When I cycle
power to the monitor it repeats what I described.

What do each of the 5 indicator lights mean when it's in error mode?
Does anyone have the MAC software for downloading the presets off of the
eeprom?
What might be common failure parts for this model? Any schematic out
there?
Thanks.
Andrew