Display screen keeps resetting every 5 miutes

Question

Our business computer is an Imac G5 10.4.11 Tiger. The display screen keeps resetting every three minutes. It just flashes and resets itself. I don't loose anything but it's very annoying. I've reset the pram & nvram with no luck. I've also done all the repairs off the start up disk. Any thoughts?
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Answer 1

Hey Michael,
I brought my Imac up to the Apple Store where we purchased it from. They had Friday & Saturday and called Sunday saying it was done. My wife brought it home and we plugged it in only to find it's still has the same problem. My wife said they went through the entire machine from top to bottom.
I called the store today and had to schedule my complaint with a service tech. I brought the machine up there myself and went through the steps (It kind of scares me when I know more than the kid helping me). I understand they have to learn somehow, I own a door & window company and totally see things from both sides. I asked for a supervisor, explaining I wasn't upset with the other staff person, I was just upset with the computer. I explained to them that I had removed the cover and looked at the capacitors with three of them bulging. I explained I had posted here for some answers and that I'd researched the issue. They told me all about the problems they had with this year and the capacitor issues were only covered for a three year period (I happened to be six months late) They then proceeded to tell me that it would cost me $900.00 to fix. I had to take a deep breath and keep my composure after that one.
My biggest complaint is they had problems with the machines logic board capacitors, but never told us it may become an issue. No letter or even the courtesy of telling us when it was serviced. I own a brand new 20" Imac, the 2005 Imac 20" (problem child), and around 10 other Imac's dating back to 2003, 4 Ipod Touch's, and 4 Iphones. Needless to say I have invested a large sum of money in Apple products. These are the only machines I've ever had since I can remember and I'll always support Apple products. It just really ****** me off when they had my machine in for power supply repairs a couple times and never said a thing to us about possible problems down the road. Now they want me to sack up $900.00 for repairs when I can get a new one for around $1200.00.
I know that these issues arise in every kind of industry. I deal with them all the time, but if I know there's a flaw that will kick my rear end down the road, I''l head it off as fast as I can to avoid angry customers. I also don't have the volume Apple has when it comes to sales, so my issues really have no validity, they have to cut it off somewhere. Is there any other route I can take to try and get this $2600.00 computer fixed without kicking my rear?
By the way, thanks for answering questions, I do it on a couple boards in my industry. I know how people beat you up on certain issues without knowing your doing it for free. I know where your coming from and want to say Thank You for your time!!!