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power supply problem and what to replace?

 
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PostPosted: Wed Jul 27, 2005 10:26 am    Post subject: power supply problem and what to replace? Reply with quote

hello,
I have a photographic enlarger with a voltage-controlled transformer. sometimes when i power it up, it takes a while to reach full-power (the lamp is dimmed and the fan doesn't spin up at full speed).

i'm trying to work out if the issue is with the power supply, which it seems. now, since these things cost a bundle to replace, i'm trying to see if i can just replace the tranformer and leave the voltage reg circuits in place. is this do-able? or could the problem be with that circuitry? are transformers all or nothing beasts so if it passes current it is ok?

lotsa questions. thanks for your help!!
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Al_Dodge_Bundy



Joined: 05 Apr 2005
Posts: 93
Location: Netherlands

PostPosted: Wed Jul 27, 2005 1:28 pm    Post subject: Reply with quote

Transformers rarely break down it self.

Most of the time, it's the electronics supplying and controlling the power supply which are failing.

The realy are "all or nothing beasts"!

Grtz Mark
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PostPosted: Thu Jul 28, 2005 5:32 am    Post subject: Reply with quote

thanks for that Mark!
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