[TechAssist] Repair tip for Daytek monitor DT-1926D, black splotches on screen

I have this Daytek 19" monitor, model DT1926D in the shop. The display
was very strange. There would be full light on the left side of the
screen but a couple of inches in from the left, dark areas would appear,
as if covering over the light in some places. Being this is hard to
describe, I took a picture of it and posted it for a limited time:

http://www.number63.ca/daytek.jpg

This problem was very temperature sensitive. The hotter the chassis
became, the more of the screen showed the proper display. I used cold
spray and a hair dryer on this one to locate the defective part.

The solution was Q408, a 2SC3198. I used a 2SC1815 instead.
-- 




Gary McCartney

McCartney Electronics
Guelph Ontario Canada 
Est. 1984
email: gary (at) number63.ca

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