Question about Compaq Presario 1510 (White) 15 in.CRT Conventional Monitor
We have had this monitor for years but just last week the brightness has become all screwed up. Even when booting so it should supposedly be a black creen with some DOS text our's is displaying a bright grey. overall it is very difficult to use, but before I dump it I thought there might be a fix available. thanks in advance.
wow a CRT that even glows at all , and you wonder why its dem
the electron gun cathodes get weaker every day of its life.
all CRTs do that, not one or even TVs using CRT
the red gun always goes dim first so we crank it up in the OSD.
if it fails on all PCs, the monitor is bad, a 5 min test. and bingo
then if the monitor is known bad then what.
the OSD screen ever seen that, and the front panel key marked MENU/?
go there and play with brightness, and even the electron gun tuning, the page for that is RGB, Red Green blue.
adjust them so white looks OK.
but if all are dim, that is normal for old CRT,
we only get like 3 folks a year stuck in 1990s... or older.
the labor to fix it is 3 times a new LCD LED display.
land fill time. like the other billion made, and scrapped
Posted on Nov 20, 2017
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Posted on Jan 02, 2017
I am having a similar issue with my NEC multisync FP912SB monitor. In my case the problem is intermittent, the line remains at the same level of brightness, and the osd, when activated, is compressed in that horizontal line as well. The problem is occurring more and more frequently. Banging on the sides of the monitor sometimes brings the picture back temporarily. I came across this. http://en.allexperts.com/q/Monitor-Problems-2115/Thin-horizontal-line-monitor.htm
It states that the problem is called vertical collapse and is caused by the failure of a couple of I.C.s in the monitor.
Hope that helps.
Posted on Nov 13, 2007
All CRT type monitors have an FBT that supplies the high voltage to the tube. Additionally, it also supplies the G2 voltage that is responsible for the screen voltage. Often the adjustment for the Screen/G2 requires a bit of tweaking after some time of usage. Incidentally, there is another adjustment in the same area for the Focus control. Of course, adjustment would have to be done on a "live set" and on the high voltage section, extreme caution must be exercised when performing this operation.
In some extreme cases, it could be a cold solder or loose connection in the squarish PCB at the very rear of the tube. Alternately, it is also possible for a capacitor that is nearing end of life (dried up).
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards. Thank you for using FixYa.
Posted on Sep 21, 2008
SOURCE: monitor is control locked
you did not given details of model, company complet discreption of problem ok no problem you press the four keys on the monitor for five seconds simultaneusly or till it will show the massage "keys unlocked" then release
Posted on Nov 23, 2008
Press the menu button on monitor select the brightness press the menuside button increases or decreases.after select exit oress the exit button on monitor.
Posted on Jul 13, 2009
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