Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Loftydon
 
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Default GE Spectra Range Electronics display unit bad... Next Step

Hi, All..
Using the method suggested by Matt Roberds, I determined that I need a
small power transformer (the bad one was mounted to the control unit pc
board) that has the following specifications (or close to them): Primary:
115 vac Secondary: 8 vac, center tapped (4 vac + 4 vac). I've looked
around at some surplus sites (All Electronics, Digikey, Allied, B.G.
Micro, etc. but haven't been able to find one with those spec's. I can
mount the xfmr on the stove chassis and run the leads to the pcb; just
can't find an xfmr. Using the variac and a 24 vac xfmr, the unit came
alive at about 3 vac and became active at 3.75 vac and very bright clock
readout at 4 vac. Does anyone have any suggestions where I could find one
in the range of 300 ma to 1000 ma? Thanks for any assistance!!

Don in sunny Florida

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Travis Jordan
 
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Default GE Spectra Range Electronics display unit bad... Next Step

Loftydon wrote:
Thanks for any assistance!!


Does the existing transformer have an open frame? Does the primary have
continuity? If so you might want to consider rewinding the secondary.

Or consider getting a 16V CT transformer with a 220 primary and running
it on 110.
http://www.mouser.com/catalog/624/1436.pdf


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Travis Jordan
 
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Default GE Spectra Range Electronics display unit bad... Next Step

Travis Jordan wrote:
Or consider getting a 16V CT transformer with a 220 primary and
running it on 110.
http://www.mouser.com/catalog/624/1436.pdf


A little cheaper version from Stancor:
http://www.mouser.com/catalog/624/1443.pdf


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Travis Jordan
 
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Default GE Spectra Range Electronics display unit bad... Next Step

Travis Jordan wrote:
Travis Jordan wrote:
Or consider getting a 16V CT transformer with a 220 primary and
running it on 110.
http://www.mouser.com/catalog/624/1436.pdf


A little cheaper version from Stancor:
http://www.mouser.com/catalog/624/1443.pdf


Or cheaper yet from Tamura....you get the idea.
http://www.mouser.com/catalog/624/1445.pdf


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