This is topic DTS-6D power supply repair in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.
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Posted by Ken Layton (Member # 133) on 04-20-2000, 09:49 PM:
For those that want to repair their own DTS-6D power supplies, here is what I have found goes wrong:
Symptom: Unit completely dead. Turning on power switch does absolutely nothing.Cause: Fuse FS-1 inside the power supply is blown (3 amp GMA style normal blow). The Radio shack replacement is part number 270-1054.
Cure: Transistors Q1 and Q2 are shorted and must be replaced. These are both mounted on an aluminum heat sink. Both of them are the same part number: 2SC2625 which can be replaced by NTE/ECG 2308 or SK9131/2311 available at your local electronics supplier. Also check for shorted diodes, D14 (hidden under choke T-3) and D15. They are both # FR102 (ultra fast recovery types) and can be replaced by ECG 587 diodes (inexpensive).
These instructions apply to the TOPOWER model TOP230USS power supply (230 watt) inside the DTS-6D.
Also, while you have the power supply apart, take a few minutes to clean out all the crud from the fan and make sure it spins freely. This power supply needs that cooling fan!
Posted by Brad Miller (Member # 2) on 04-21-2000, 05:00 AM:
Nice tip. Thanks Ken. 
Posted by Mark Gulbrandsen (Member # 72) on 04-21-2000, 08:36 AM:
Thanks Ken,
I'll remember that if I get in a jam with one, but with the cost of a new one soooo low why even fix it? AT supplies are real cheap, they only go for $10.00 to $12.00 around Salt Lake City.
Mark
Posted by Daryl Lund (Member # 356) on 04-23-2000, 12:00 PM:
When the birds fly over my good friend ken laytons house.Do you know what they are saying? Cheap Cheap Cheap Cheap. Kenny is a very good friend but I must give him a bad time once and a while.
Posted by Bruce McGee (Member # 131) on 04-23-2000, 12:58 PM:
Cheap Cheap?Because of cheap things, I am allowed to get more of the stuff that I want. Like FEATURES!
I appreciate you, Ken. Guys like you give the hobby (and the business) CLASS!
Bruce McGee (First-class tightwad--by circumstances, not preferences!)
Posted by Brad Miller (Member # 2) on 04-23-2000, 04:42 PM:
Ken should get a raise with all of the little amounts of money he saves his theaters. This reminds me of the character "Joe" on NewsRadio.
Posted by Mark Gulbrandsen (Member # 72) on 04-23-2000, 06:09 PM:
Cheap it may be but its cheaper to just get a new one and replace the old....from a time standpoint anyway. Who knows, The AT supplies will probably be obsolete soon anyway so we will all be fixing them.
Mark
Posted by Ken Layton (Member # 133) on 04-23-2000, 07:41 PM:
I forgot to mention that it took me all of five minutes to repair the power supply. That includes the time it took to warm up the soldering iron.
Posted by Karen Hultgren (Member # 395) on 05-12-2000, 06:59 PM:
If you go into our web site, in the cinema section, under techcenter, click on DTS-6D and troubleshooting. There is a guide there to help.Karen at DTS