My monitor sucks here's why...

[eobard]

Who here knows how to fix a monitor when it keeps sporatically shifting the color of everything on the screen into the blue spectrum, as if I put a piece of blue celophane in front of the monitor???? It isn't the cable btw.

[CrystalMethod]

Shoot, that reminds me. I forgot to ask my brother what causes that. There's another thread in here about it, or something simmilar. I'll ask him tomorrow and let you know.

[eobard]

Originally posted by CrystalMethod
Shoot, that reminds me. I forgot to ask my brother what causes that. There's another thread in here about it, or something simmilar. I'll ask him tomorrow and let you know.

Yeah that was mine. In that one I was just aking about the hows and whys of the problem, this thread is about actually fixing it. However having gone back and re-read the first one I realize there probably isn't a need for two seperate threads. I must be tired. :rolleyes: Greenies if you want to merge the two I've no objection. Sorry for the wastefullness.

[eobard]

It's blueie-green non stop now. :mad: :rolleyes: Anybody got clues on how to fix it I'm listening.

[Yodums]

Something maybe crapping out in the monitor as alot of the monitor in my previous school had the problem.

How about video card?

[Kingslayer]

Take it to a monitor repair man and see what he can do. But my guy says that the fix is probably greater than the worth of the monitor.

[flounder43]

That is what has happened to a couple of mine. There is something about that blue tint... sometimes a good whack or two seems to help.

[Jeff Bolton]

my dad's monitor shifts into the yellow spectrum every once in a while, but very rarely. i like flounder's idea. just show it who's boss. :)

jeff

[flounder43]

Originally posted by Spike Spiegel
my dad's monitor shifts into the yellow spectrum every once in a while, but very rarely. i like flounder's idea. just show it who's boss. :)

jeff

Hehe, I used to have a TV that would go black and white once and a while, and a whack would turn it back into color...One really good whack did it in, though...

[eobard]

It's not turning blue-green, it's turning non-red. The red gun is crapping out, unfortunately. I'm still hoping someone will post that there's something else other than the actual tube that could cause this, something that costs $10 to fix (hey, I can delude myself if I want to).

[donny_paycheck]

Originally posted by eobard
It's not turning blue-green, it's turning non-red. The red gun is crapping out, unfortunately. I'm still hoping someone will post that there's something else other than the actual tube that could cause this, something that costs $10 to fix (hey, I can delude myself if I want to).

My guess is nothing that wouldn't involve opening the monitor and intermediate electronic work to correct. Is it totally random or does it seem to coincide with the monitor receiving bumps or heating up to a high temperature?

[eobard]

Temperature is consistent, there is no bumping.

[donny_paycheck]

Originally posted by eobard
Temperature is consistent, there is no bumping.

Jeez, does it have many hours on it? How old would you say it is and how much has it been used? Cathode heaters last a long time....usually something else breaks first.

[Pinky]

I wasn't kidding my friend, canned air!

[eobard]

Something just occoured to me, could extreem air dryness cause this problem??

[donny_paycheck]

Originally posted by eobard
Something just occoured to me, could extreem air dryness cause this problem??

I sort of doubt it but I'm no electrical engineer. Dry air is conducive to the travel of electrostatic energy but were that the case you'd hear some sort of arcing or a sizzling from high voltage leakage while the monitor was operating.

[PsycoPhreak]

I've had this problem before with a few monitors, and all of them seemed to have been fixed when I removed the back cover and disconnected the driver circuit off the back of the tube and cleaned the pins themselves, I have even found monitors that were thrown out because of this exact problem and a few of them were not cheap ones either. Worth a try in my book, saves the cost of a diagnosis/repair at a shop for those who can not fix it themselves.

[donny_paycheck]

Originally posted by PsycoPhreak
I've had this problem before with a few monitors, and all of them seemed to have been fixed when I removed the back cover and disconnected the driver circuit off the back of the tube and cleaned the pins themselves, I have even found monitors that were thrown out because of this exact problem and a few of them were not cheap ones either. Worth a try in my book, saves the cost of a diagnosis/repair at a shop for those who can not fix it themselves.

That's an excellent idea. I took mine apart recently to do THIS WORK (http://forums.overclockers.ws/vb/showthread.php?s=&threadid=53577&perpage=30&pagenumber=1) to it and in the process removed the CRT backplane. Dust was clumped all over the socket. High DC voltages promote electrostatic precipitation of dust particulates all over the terminals back there, just like the front of the screen after it turns off and also just like an electrostatic air purifier. This dust clump was not problematic for me but I could see it developing into one in a rare case possibly.

I'd crack it open and take a look at the insides, especially the plug at the back of the CRT where the gun voltages are applied.

[rogerdugans]

a silly, simple one that gets overlooked sometimes is a loose cable, or worn out cable. Probably not it, but moving the cable around to check might be worth a few seconds!

[eobard]

I opened it up again and gave a light dusting (blowing through a straw) and did dislodge one fair sized chunk of dust that I hadn't seen when I first looked inside. Tomorrow I'm going to "make" a can of compressed air by putting an extra small nozzle on my shop vac and run it backwards. I'll give it a good dusting then and see what happens. Hopefully the problem will disappear for good then. Think good thoughts people, I need it.
http://koti.mbnet.fi/antiqser/smilies/thinking2.gif

[eobard]

Well I just finished dusting it out with my shop vac in reverse. Hopefully the problem is gone for good (I've said it before and I'll say it again, I can delude myself if I want to).

[eobard]

Addendum: the red cut out for about 3 seconds just now, long enough to confirm that dust wasn't the problem. :(

[paupton]

are there any speakers of any size close to your monitor. sometimes magnets can cause the problem you described.
a tech can do something to the color guns and sometimes straighten it out. good luck getting it fixed.
:eh?:

[PsycoPhreak]

OK..if the different colors are cutting out, check the pins on the plug and clean if needed.....and the same goes for what I had said earlier, take the cover off, and clean the pins that are on the back of the tube, that means unplugging the board off the back of the tube...

BE CAREFUL, throw on some rubber gloves if you do this, if not, you might get shocked or worse.

[eobard]

I'm now back to using my old 14" monitor. 640X480 @ 60hz. :rolleyes: :rolleyes: :rolleyes: Man I hate this. I can't even use the keyboard properly anymore because the screen image is smaller so my finger assume they need to strike the keys as if they were closer together so I'm hitting wrong keys left,m right and cente. (see what I mean) I gave the system a good hosing out earlier. I may give it a more detailed "dusting" later but I'm pretty much reconsiled to the fact that I'll be buying a new monitor when I got to Torotno next moth. (AAAHHHHH!!!! :mad: )

[donny_paycheck]

Originally posted by eobard
I'm now back to using my old 14" monitor. 640X480 @ 60hz. :rolleyes: :rolleyes: :rolleyes: Man I hate this. I can't even use the keyboard properly anymore because the screen image is smaller so my finger assume they need to strike the keys as if they were closer together so I'm hitting wrong keys left,m right and cente. (see what I mean) I gave the system a good hosing out earlier. I may give it a more detailed "dusting" later but I'm pretty much reconsiled to the fact that I'll be buying a new monitor when I got to Torotno next moth. (AAAHHHHH!!!! :mad: )

Ebay, my friend, Ebay.

[eobard]

Originally posted by donny_paycheck


Ebay, my friend, Ebay.

Shipping fees on something as weighty as a monitor? No thanks, I'll pass on that one.

[donny_paycheck]

Originally posted by eobard


Shipping fees on something as weighty as a monitor? No thanks, I'll pass on that one.

My 21" Trinitron in a store: 650+ USD....on ebay: $275 US plus $45 for UPS ground. I know it's a sky-high shipping fee but you still net more over the retail alternative if you get a good deal.

[CrystalMethod]

Sorry it took me so long, but my brother is a hard person to track down. Apparently what causes the condion you've described is a just a resistor at the back of the CRT that's gone bad/ on it's way out. The hard part is locating it and identifying it. If you know how to read the color bands in resistors (if it's that type), and have the patience to test them then all, the replacement of it is pretty easy. Depends on your skill with a ohmeter, and soldering iron. Hope you haven't given up on your monitor by now, bought one. Sorry again for the late reply.

[eobard]

Originally posted by CrystalMethod
Sorry it took me so long, but my brother is a hard person to track down. Apparently what causes the condion you've described is a just a resistor at the back of the CRT that's gone bad/ on it's way out. The hard part is locating it and identifying it. If you know how to read the color bands in resistors (if it's that type), and have the patience to test them then all, the replacement of it is pretty easy. Depends on your skill with a ohmeter, and soldering iron. Hope you haven't given up on your monitor by now, bought one. Sorry again for the late reply.

You know it never occoured to me to yank each and every resistor and test them all. I'm pretty hamfisted when it comes to soldering but I may just be able to do the job. Good idea, thanks. Haven't bought a replacement yet, if I can't fix this one I'm going to get one mid-February when I'm in Toronto next (cheaper prices, much cheaper!!) If anyone has any other suggestions between now and then please feel free to let me know.