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Old 14th Sep 2018, 1:56 pm   #43
Focus Diode
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Join Date: Jan 2006
Location: Borough of Gateshead, UK.
Posts: 1,420
Default Re: Stuck on a BRC 1400!

Quote:
Originally Posted by FERNSEH View Post
I do remember of one instance in a BRC 1400 in which the fuse blowing fault was caused by the mains dropper resistor itself. Replacing the part solved the problem and yet on cold tests no fault could be found with the original dropper resistor.
Interesting. The original dropper had two o/c sections. I temporarily bridged the surge limiter before powering up with a lamp limiter. I cut the supply to the system switch solenoid at the same time.

The fuse no longer blew and a faint glow could be seen in the 30PL1.

I then replaced the whole dropper. Same result. HT present at the main smoothing can. Try on full mains the set came to life.

The set arrived with a blown mains fuse. The seller didn't know anything about the sets history. The system switch was found in the 625-line position.

Brian
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