tjhayko@THUNDER.LAKEHEADU.CA (12/11/90)
My 1084 monitor seems to have developed a problem. Occasionally when I turn it on, nothing happens. The little red light in the on-off switch lights, but nothing appears on the screen. If I then pick it up and gently shake it, it works. Anybody have any ideas if this is one of the infamous 1084 monitor problems, and if it is, can I fix it? ************************************************************* * Tom Hayko * only the Amiga /// * * tjhayko@thunder.lakeheadu.ca * (Commodore is starting/// * * * to know that) \\\/// * * * and it's about time\XX/ * ************************************************************* QUIT
n368bq@tamuts.tamu.edu (Raoul Rodriguez) (12/11/90)
Allright, one more time... this you your monitor... this is you monitor with a broken solder joint... any questions? Your problem is most likely the same one I had... which was as follows A while after I got my monitor the picture would "jiggle" when something would bump the desk it was sitting on... no big deal... It slowly progressed until the jiggle was quite pronounced, adn I would have to tap the monitor on the side in order to get it completely still again (repeated semi-gental taps that is) And then one day...poof! the screen when out, and then came back on for no reason... hmmm something funny here... It did it again and again, and then once, after it went out, it wouldn't come back after I bumped the desk, only after a tap to monitor itself (definantly NOT a love tap) This progressed for sometime until it became quite intolerable, but since I was at school I coudn't take it apart or over to the local C= dealer, but I had noticed that when i set a bookshelf on the top of the monitor the picture would come back, so I removed the case and inserted some bad disks between the metal shielding and the bottom of the plactic monitor case, and poof the monitor came on again... it was fixed! (yea right!) A few months later, it started up again with a vengance, and I returned home for the summer, took it to a C= dealer and he informed me that the monitor would have to have it's motherboard replaced... (oh goody!) mucho bucks (`$150 about $150 or so... I told my friend about it, he and I (more he than I) took it apart and went hunting for a broken solder joint, and this how you fix it, be warned though this will DEFINANTLY VOID YOUR WARRANTEE!!!!!! 1) Remove the plastic case (don't forget the screws in back!) 2) (you may not want to do this but...) We left the monitor plugged in and on in order to find where the joint was bad. We did this by pushing on the metal shielding on the bottom of the motherboard until we localized the bad "area" 3) Remove the metal shielding underneth the motherboard, you will have to de-solder it 4) Find the broken solder, and re-solder it, you can also "listen" for it by bending the board, but, do this ONLY if you have messed with circuit boards before!!!!!! 5) PLug it back in, re-ground it, and check to see if the monitor works or not... if not, you are not grounded properly, or haven't fixed the problem go back to step 4... 6) If it works, re-solder the shielding to the motherboard and put all the wires you disconnected to get to the motherboard back where they go. 7) Should have included this earlier, after you "localize" the broken solder, UNPLUG THE MONITOR, and turn it off!!! 8) Put the case back on and plug it in... good as new! A couple of notes... a) find someone who knows how to play with circuit boards... b) Don't mess with any of the knobs and such inside the case, especially the ones on the back of the tube, they are a pain to get right again... c) If you don't know squat about boards, find someone who works "cheap" (mine cost me a "Super Big Gulp" :) d) Remeber what came unplugged from where... (common sense in action here) Have fun Raoul Rodriguez...