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Small Cabin Forum / Off Topic / Circuit Board Troubleshooting
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paulz
Member
# Posted: 17 Oct 2020 15:07
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I bought a new Sangean portable radio for the cabin. If fell off the shelf while I was doing something. Still works but the digital display is blank, mostly. I have it apart but still functional. Once in awhile the display comes on. I have poked, prodded and twisted the circuit board around to no avail, can't find what connection or thing is causing it.

Is there some other method of finding out what's causing it?

ratfink56
Member
# Posted: 19 Oct 2020 18:01
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Have you used a magnifying glass to view the circuit board? Sounds like a solder connection which could be very difficult to spot. Shooting in the dark here.

SE Ohio
Member
# Posted: 19 Oct 2020 20:50
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Is it possible to prod board while powered? Use non-conductive rod? Might find weak connection this way. I’m guessing surface mounted components? Might be tricky to resolder... If conformal-coated board you’ll have to scrape coating off to solder. No fun...

Old tube gear is so much easier to repair!

SE Ohio

paulz
Member
# Posted: 20 Oct 2020 11:22 - Edited by: paulz
Reply 


Thanks guys. Yeah I did looks the solder joints with a loupe and poked at them while powered up. No luck.

So I trashed it. I thought it would give the best reception at my cabin but it was really no better than the $10 USB rechargeable radio I have been using in it's place.

I try to fix everything I can but with electronics is a different ball game for me, and sometimes just not worth it .

SE Ohio
Member
# Posted: 20 Oct 2020 13:36
Reply 


If you are using AM or shortwave, a long wire (60-100’) hung high, brought in and looped around the radio will boost signals in a big way. An outside fm antenna hung high can help FM reception.

Some radios are more sensitive than others, too. Sometimes one can find a GE Supertuner or Supertuner 2 at a thrift shop for under $10. Great for am/fm long distance signals

SE Ohio

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