Need Help with Lightmaker Ballast at DVinfo.net

Go Back   DV Info Net > The Tools of DV and HD Production > Photon Management

Photon Management
Shine an ever-loving light on you.


Reply
 
Thread Tools Search this Thread
Old February 19th, 2007, 05:54 AM   #1
Inner Circle
 
Join Date: Dec 2002
Location: Augusta Georgia
Posts: 5,413
Need Help with Lightmaker Ballast

A friend of mine has an HMI electronic ballast which has problems.

It is a Lightmaker 575/1200 electronic ballast Model II.

At a shoot, they turned off the lights, but left the Lightmaker ballast powered on overnight.

We now know that the way the unit is designed is that the internal fan does not come on unless the 1200 watt HMI light is on. So during idle periods there is no cooling, nor is their any cooling if only the 575 watt HMI light is lit.

The unit was left on 24 hours and would not work the next morning.

So far, we have learned that the Toshiba mg50j2ys50 IGBT (Insulated Gate Bipolor Transistor) appears to be bad. We also have a few fried resisters (at least). Our current theory is that the IGBT overheated, had a meltdown, and 120 volts flowed out the sensitive input (gate) inputs.

The Toshiba IGBT is an obsolete part. We are currently searching for either an original part or a more modern replacement part.

We are also looking for a schematic for this ballast. It is just amazing to us as how much electronics is packed inside this electronic ballast!

Does anyone have experience with this electronic ballast?

Does anyone have a schematic?

Does anyone have a Lightmaker 575/1200 electronic ballast for sale, working or not?

We know that Lightmaker is currently out of business. Did another company assume their business or perform repair on their equipment?
__________________
Dan Keaton
Augusta Georgia
Dan Keaton is offline   Reply With Quote
Old February 19th, 2007, 05:40 PM   #2
Major Player
 
Join Date: Jun 2006
Location: Shenzhen, China
Posts: 781
A quick check on the web yielded these two for sale:

http://www.screenlightandgrip.com/html/equip.html

http://www.kayelites.com/lightmaker1200.htm

You might call them and see how much they want.

Good luck.
__________________
Richard Andrewski - Cool Lights USA - RED #114
http://www.coollights.biz
Richard Andrewski is offline   Reply With Quote
Old February 19th, 2007, 06:26 PM   #3
Inner Circle
 
Join Date: Dec 2002
Location: Augusta Georgia
Posts: 5,413
Thanks Richard,

We will check these out.
__________________
Dan Keaton
Augusta Georgia
Dan Keaton is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > Photon Management

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 10:34 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network