40% Humidity-- My monitor Wonky again

[jeffpapier]

My SCEPTRE 17inch monitor is blanking out, showing a weird color combination(stands out like 3D), and takes five to fifteen minutes to return to normal. This happens after rainstorms and high humidity. There were no problems during the winter heating season. Is there anyone having similiar problems?
As soon as the case warms up the screen problems disappear. Are dust and moisture causing shorts? Would blowing the dust out do any good or should I shut the windows and get a dehumidifier?

[Stan]

Hi

Well, correct me if I am wrong, but 40% humidity looks pretty dry to me...
Normal humidity level is between 40 and 70% (I think). Anything about that is damp !

I remember a similar problem with an old TV that had to spend the night out... (don't ask me why http://www.sysopt.com/forum/wink.gif)
It took at least 5 min for the poor old thing to warm up and display an image !
Definitely due to high humidity level !!!

Stan

[Peter M]

I'd rather suggest you retire your high voltage equipment from that high humidity area and get a flat panel display instead. There's always the risk of getting zapped when touching the unit ...

Regards, Peter

[jeffpapier]

I am going to open and clean the monitor this weekend. #1 check for any shorts caused by excess dust + moisture. #2 after blowing the dust out, check for a semi-short. maybe a dry solder joint or expansion-contraction due to the cold and miosture, in a connector or board.

This problem repeats after being shut off eight hours.
There are no snaps, crackles, or pops when it is turned on
Does the same thing with other computers.
The monitor sits in a cabinet that is closed when not in use. The back is vented.

[daveleau]

I live in Charleston SC where the temp is 90F + and the humidity is always around 80-95%. (90% humidity at 50F is not as bad as 70% humidity at 80F) I have never had a problem like this. I would think something is wrong with the monitor and I would not suggest working on it yourself unless you are experienced in these matters as you can really jolt yourself with electricity (when the monitor is UNPLUGGED).

Good luck though
Dave

[Bsdboy]

Be VERY CAREFULL even unplugged there are
very high votages present in your monitor
the capacitors can store high voltages for
a long time!

Bsdboy

[eweruk]

The humidity level is pretty low to be causing that. I live in Vancouver where the humidity is usually 70-90% and cannot say I have had an issue like that. The room temp can play a role if it is too cool. Hope no one has used the monitor for a drink tray!

[jeffpapier]

Cleaned and checked out the back of the monitor.
The circuit boards appear to have ripples.
A bad cure in the manufacturing?
Pulled and reset all the connections inside the back. The problem seems to be in a set of pins in a circuit board. I resoldered the pins but may have to run jumper wires back to the nearest component in the circuit. But first I will try a copper pen on the board.
I am still getting bad screen occasionally, maybe one instead of ten as before.

[LemonHead]

my advice: email god (or allah, or buddha, or whoever...) and he'll sort ya out