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Old 18th July 2017, 05:52 AM
John King John King is offline
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Join Date: Nov 2012
Location: County Durham
Posts: 3,319
Default Faulty power supply

Quote:
Originally Posted by EdmundH View Post
Before you go any further; don't assume that its the transformer at fault unless you can test it with a voltmeter. More likely that the halogen bulb has blown, it won't necessarily look faulty. It may even be corroded bulb contacts, which should also be cured by replacing the bulb]
Even if the bulb has blown, there are small pilot bulbs that illuminate the colour dials. These should still light up. If they don't, it sounds very much like a power supply problem as you think

If you contact 2nd hand darkroom supplies, they very often have spare transformers for sale which will not be advertised on their website. I replaced the complete colour head for my LPL7700 for a very reasonable price but the head was not advertised.
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