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Author Topic: Dolby Power supply PS 1 lite flashes Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 04-30-2005 06:53 AM                     I finally found a Dolby Power Supply PS-1 that I purchased just recently. When I apply power to it, the 15v- and the 15v+ red lights lite, but the 24v+ red light flashes on and off, and I hear a click each times it flashes. I read the voltage from the two 15v and they are correct, but the 24v does not put out any voltage. Also, nothing is connected to the pwr supply. Any ideas?  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 04-30-2005 11:46 AM                     Download the cp200 schematics for the drawing of that ps there is a UJT timmer on the 24v rail that provided some muting proctection during powerup  |  IP: Logged Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 05-01-2005 09:42 AM                     Gordon, Last night I pluged in the power to the PS-1 and the red lite just keeps flashing and clicking..........I pushed the power button on and off several times and still no change.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 05-01-2005 11:59 AM                     Deleted double post...the F-T server sure runs like molasses sometimes.....  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 05-01-2005 11:59 AM                     Paul, Perhaps you need to take some electrionics courses . Or just hire a service tech to come have a look at it . Could be a number of things causing your problem aside from what Gord mentioned above. Used equipment is not always the best bet unless you're electronics savy..... Mark  |  IP: Logged Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 05-01-2005 03:21 PM                     Mark, Your right at about electronic courses......however I'm a home hobbyest, and sence this PS-1 was purchased, if there is a quick fix fine, otherwise I'll return it to the seller. Thought maybe I was doing something incorrect on a power up check. Or perhaps there has to be a load on the 24v. but I don't think so. I've downloaded the CP200 file and diagrams etc.....but can't find anything to cause the red lite flashing and clicking. Do you have somme ideas?????  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 05-01-2005 06:41 PM                     Measure the output of the bridge circuits and the filters If they all match the rated values then I suspect the timer  |  IP: Logged Phil Hill I love my cootie bug Posts: 7595 From: Hollywood, CA USA Registered: Mar 2000 posted 05-01-2005 06:51 PM                  I agree Gord... quote: Paul Vollmers ...but the 24v does not put out any voltage. I find that hard to believe since the LED that's blinking with the relay clicking is powered from the 24vdc supply that is available on the TS strip. At this point, I have to agree with Mark, get a local tech that has knowledge of electronics...it actually sounds like a simple problem with a simple solution.  |  IP: Logged Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 05-02-2005 08:18 PM                     Gordon, You were correct, about the timer.........turns out the power supply is senitive to the cold.......after bring the power supply into the house from the cold garage, the 24v lite came on after a 2 second deley. Thanks for your input........and to all the others. Paul  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 05-03-2005 12:13 AM                       How cold is it in your garage? It's probably the humidity as the timer is a very high impedance circuit and dampness has a known effect.  |  IP: Logged Richard Hamilton Phenomenal Film Handler Posts: 1341 From: Evansville, Indiana Registered: Jan 2000 posted 05-03-2005 05:57 AM                     Temperature has an effect on the equipment??? This winter during an instal, I was called to the booth because of different problems. I walked in the room, and the trainees still had heavy jackets and scarves and hats and mittens on. It was in the mid 30's inside the booth. I don't know if a manufacturer tests booth equipment for these conditions. I told them to fix the heat and "I'll be back"  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 05-03-2005 07:40 AM                     quote: Richard Hamilton I told them to fix the heat and "I'll be back" Oh come on man... you're too spoiled by that Florida climate. 30 degrees is nuttin....... . You need to spend some time in Northern Idaho in the dead of winter and get acclimated!! Omaha can actually be even worse as the humidity is alot higher there but then Idaho usually gets alot colder. My R-2 has to warm up to room temp before it will operate properly. It runs but won't talk to the computer reliably till its comfortable inside. Mark  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 05-03-2005 10:54 AM                     Time to get rid of that ol' dinosaur and get a D2!!!  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 05-03-2005 11:18 AM                     quote: Time to get rid of that ol' dinosaur and get a D2!!! I couldn't agree more but after doing close to 3000 rooms with this R-2 its kinda hard to just leave it in the closet and let it . Its been a very good analyzer and my dinosaur Toshiba Satellite model 1 is also still working like a champ...... Mark  |  IP: Logged Kris Brunton Expert Film Handler Posts: 108 From: Napanee, Ontario, Canada Registered: Apr 2000 posted 05-03-2005 06:06 PM                     [QUOTEI couldn't agree more but after doing close to 3000 rooms with this R-2 its kinda hard to just leave it in the closet and let it ] [/QUOTE] I have to agree with Mark.. until someone comes out with a wireless unit I will remain quite attached to my R2..  |  IP: Logged

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