Electronics > Beginners
Why 2 transformers? (pic)
billbyrd1945:
Are we all looking at the same schematic? I don't see a TL494.
ataradov:
--- Quote from: billbyrd1945 on January 14, 2019, 03:04:06 am ---Are we all looking at the same schematic? I don't see a TL494.
--- End quote ---
IC1 is TL494.
wraper:
I recalled a typical failure of such PSUs. C13 and C14 electrolytic caps loose their capacitance. Also one of the first things you should do is check T6 and T7. Of course after fuse was checked first.
billbyrd1945:
--- Quote from: wraper on January 14, 2019, 03:05:02 am ---I recalled a typical failure of such PSUs. C13 and C14 electrolytic caps loose their capacitance. Also one of the first things you should do is check T6 and T7. Of course after fuse was checked first.
--- End quote ---
All replaced.
wraper:
--- Quote from: billbyrd1945 on January 14, 2019, 03:07:30 am ---
--- Quote from: wraper on January 14, 2019, 03:05:02 am ---I recalled a typical failure of such PSUs. C13 and C14 electrolytic caps loose their capacitance. Also one of the first things you should do is check T6 and T7. Of course after fuse was checked first.
--- End quote ---
All replaced.
--- End quote ---
You should say such things first :blah:. Why, were they faulty or just in case?
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