Anyone having Power Supply Failures with 4305's

For some reason over the last 6-8 weeks I am getting multiple power failures on my 4305DMPs, replacing the power supply/wall plug brings everything right back but I'm wondering if there is a bigger problem.
All DMP's are connected to APC power bars with Surge Protection, and the LCD Screen continues to work fine. The DMP will just quickly flicker both Red and Green Lights, and remain unresponsive. We have tried cleaning teh contacts on the power supply but have had no luck.
I have had to swap 10-12 of them now, these have been working with no issues in the field for over 3 years.
I guess I am just wondering if anyone else has had this problem, a search on here didn't reveal anything.
Thanks,
Jh

I haven't heard anything about this on the 4305, but just pointing out that this is a 2-year old post.
We're using some Linksys POE -> 5V splitters and they've been humming away for years. I listen to feedback about reliability, but it would be helpful if a specific part # / manufacturer on the brick were identified along with any complaints about it.
As far as replacements, be sure to use the right specifications, other DMPs operate off of 12VDC but the 4305 uses a 5-volt adapter.
Input voltage: 5V
Input current: 3 ADC
Power consumption: Peak: 12W; average: 5W

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I'm branching out this thread as a continuation of <http://discussions.apple.com/thread.jspa?threadID=2418851> since the topic has evolved and the subject is no longer accurate.
I have a 2.1GHz iMac G5 (iSight) that does not boot reliably and sometimes goes into deep sleep and can't be awakened. I have ruled out software and RAM issues, leaving power supply and logic board as the likely suspects. I'm leaning towards the power supply. I'd like more info on the symptoms of power supply failures and see if my symptoms are consistent with it.
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HT5219 I have a macbook air (mid 2012) and a thunderbolt display. Do I absolutely need to connect the power supply together with the thunderbolt cable ? I found that the screen won't wake up if only the thunderbolt connection is plugged.

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http://www.newegg.com/Product/Product.aspx?Item=9SIA4CP1GF8726&cm_re=power_supplies_500w-_-9SIA4CP1G...
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This question was solved.
View Solution.

JCGood1984, welcome to the forum.
The computer should take a standard ATX power supply unit (PSU). I suggest measuring the existing PSU and compare the measurements to the one in the links. If the measurements are the same, it should fit. I don't know anything about the brand, however.
Please click the "Thumbs up + button" if I have helped you and click "Accept as Solution" if your problem is solved.
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Macitguy.com,
Image was not taken at starting, but to be sure here under are values taken 30 mn after starting with antivirus scanning from the start:
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