Film-Tech Forum ARCHIVE: Nec1200 power supply

This is topic Nec1200 power supply in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

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Posted by David J Hilsgen (Member # 2614) on 02-08-2019, 05:44 PM:

Anybody else having problems with this power supply I had 4 crap out in about a month and a half

Posted by Mark Gulbrandsen (Member # 72) on 02-08-2019, 06:23 PM:

The early ones do fail, but the later San-Rex and the same type of replacements have been fine. What make are the ones that are failing? What brand of lamps do you use? Do you have surge protectors on the booth panels?

Mark

Posted by David J Hilsgen (Member # 2614) on 02-08-2019, 07:00 PM:

They are the early ones, we are running osram one location we have ushio lamps no surge protectors on the panels

Posted by Mark Gulbrandsen (Member # 72) on 02-10-2019, 01:28 PM:

The early ones all fail eventually, but the replacement is very reliable. The projectors must have all gone in about the same mtime so they are all failing close together.... The new rectifiers are not cheap, something like $2850 USD
each.

Mark

Posted by Gordon McLeod (Member # 33) on 02-10-2019, 03:48 PM:

Mark I thought nothing NEC ever failed [Smile]

The original rectifiers were by Rubicon

Posted by Mark Gulbrandsen (Member # 72) on 02-10-2019, 08:08 PM:

Gord, After 8+ years I can still count the problems I have had with 344 NEC on just one hand, The Ruby rectifiers actually lasted my customer six years.., Only two 1200's I installed had them. The rest have been fine.

Mark