Question about Computers & Internet
My problem -
Relisys TE770-RU 17'' CRT Monitor
When my monitor was working correctly, I would plug in the monitor, the green power light would come on for a second, then it would turn amber (power down, I believe).
Now when I plug the monitor on the power light simply flashes and there is clicking noise, I have to repeatedly turn the monitor on and off at the plug switch to get it to eventually come on properly. I noticed this was worse in cold weather or in the morning when it was cold.
I tried an experiment, I placed a fan heater a couple of feet away from the monitor and switched it on for 15-20 minutes then turned the monitor on, It came on as normal. I've tried this a few times now, even in the morning and it comes on as normal. So when I warm my monitor up in this way it works as normal.
I was wondering if anyone had any ideas what the problem might be.
It is a weak cathode heater inside the CRT. One fix, besides what you are doing, is to replace the glass tube (crt) inside the monitor. Unless you can find a used one, may be hard to find now. It may also be possible to supply the heater filament with a separate supply. I believe this requires a 6 volt supply, so try adding a 10 volt (FUSED- 2 amp) supply to the filament only.
Posted on Nov 20, 2007
Tips for a great answer:
Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
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