Screen blinks - sometimes shrinks & disappears and then re-appears
I've seen this problem with CRT TV's before. I've a 9 year old Mitsubishi Diamond Pro 710 monitor that has worked perfectly until now. But it now starts to play up by shrinking the screen, sometimes disappearing the screen whilst "blinking" and then having the screen reformat itself back into a normal trouble free screen. Can't see any answers as to what to do in the Troubleshooting Guide in the manual. Any ideas anybody ?
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when picture is getting smaller in size or goes away or moves towards one side then hit your TV lightly on left side or right side or on top & then observe ..........you will get normal picture or it comes & again it goes....if it is happening like that then following is the situation..........after 4 or 5 yrs in some TVs on main board at some soldering joints crack develops....then due to loose contact picture becomes small in size or disappears ...........when we hit that lightly then those loose contacts joins temporarly & again picture appears for some time............so solution is ......TV main board should be observed carefully & most of the joints should be re-soldered.......only a good service engineer can do that........even after hitting TV lightly if there is no response then main board has to be checked completely........in your case iam sure it is loose connection problem.........joints should be re - soldered ...100% it works again................this problem cannot be solved by user unless user has idea about components( resisitors, transisitors, diodes,...etc) , have soldering iron , multimeter & other tools....................so contact good TV service engineer
Your tv could have one of several faults. None of which are to be tackled by anyone except a qualified engineer due to the electric shock hazard.the first problem could be the crt (tube) the second could be the componets on crt base circuit board ie resistors or ic. With a tv 9 years old it may not be economical to carry out a reair.
I thought my problem was originally monitor related. However since I posted, the picture disappeared altogether, and my PC wouldn't even start to bootup. Fearing my mobo may have died I removed the hardware components, cleaned then re-assembled them. After all that, it turned out that my graphics card has a tendency to become slightly unseated. Once I was aware of this problem booting up resumed normally. It seems that the problem of the fading monitor picture seems to still occur, but soon after I use the machine after 'hibernation' state, and even then it doesn't always occur if I do use hibernation. I haven't used hibernation for a little while and so far the problem has not returned
Complete service manual with an error search tree , sometimes there is a vertical ic defect by deformed capacitors hanging around that or a powerline from powersupply failed (sometimes there could be a defect fuse resistor to find ) or only a bad factory cold soldering by manipulate some passive components somewhere in vertical stage .
Yes, absolutely know that one. It is a problem with the hardware in your monitor. I had the very same problem, there is no tuning or anything else thats going to fix it. Hopefully, you are still under warranty, well since it's six years old probably not. Since LCD flatpanel have dropped dramtically in price, I suggest you get a new LCD. The cost and trouble to fix it just isn't worth it. Best.