Is it possible for transformer substitution?
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Re: Is it possible for transformer substitution?
The blue lead from the positive terminal connects to one lead of the led, the other lead of the led likely has a resistor inside the insulated tube that connects to the negative terminal. the three blank terminals on the other half of the switch don't connect to anything.Comment
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Re: Is it possible for transformer substitution?
BTW a so-called Dim Bulb Tester is the most excellent test unit to see if the transformer is still any good.
Connect a 60W incandescent lamp in series with the primary (or in parallel with the burnt fuse) and see if it lights up when you plug it in (with no load on the output). If it doesn't glow, the transformer may still be good. If it doesn't glow and then you short the output of the PSU (the red and black terminals) and then it starts glowing, then your transformer may still be very operational.
If it lights brightly with no load on the output of the PSU, do not pass go, do not collect $200, transformer probably belongs in the bin.Comment
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Re: Is it possible for transformer substitution?
Is there any danger of accidentally eletrocuted from a wet finger touching the same switch handling mains and secondary? Kindly advice any better way to modify this setting.Comment
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Re: Is it possible for transformer substitution?
Dear all,
With helpful assistance and kind tips with schematic and lots of patience, i finally unsolder the donor transformer from the burned pcb and moved it to the kent unit. Put in an incandescent light bulb in place of the 3A glass fuse, and switched on the main. The light bulb doesn't glow, no smoke or spark and i set the front switch to 12v. The led indicator lights on, and measuring the output gives a reading of 16.2vdc.
Wow, thanks so much guys. Finally you made me a happy guy today. This forum has been a great source for helping those in need in getting things fixed and therefore reduce waste in the landfill.
Bravo!Comment
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Re: Is it possible for transformer substitution?
Next you need to mod it so that it actually regulates voltage down to a common value... like this supposedly commercial but may well be homemade PSU: https://www.badcaps.net/forum/showthread.php?t=110815Comment
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