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me too, i don't think the residue caused the trouble, it may have masked something amiss which i did not noticed at first, i just resoldered everything in that area and cleaned off , it just that they are too much residue around the area
FINALLY FIXED IT!
I initially suspected the input/prescaler board but even after almost scorching the board with my hot air station I cannot provoke it to work, I turned my attention to the display board
It didn’t take long before I had a specific area to concentrate, its around an HD74S112P ic...
@mister_rf, thanks mate! i really appreciate the effort, i will tear down my unit again tomorrow and report back,,, man you're a genius! how i wish i had that skill in understanding circuits, tnx!
@bradtherad, yes mate since i was not sure about the esr of the cap, i just replaced with another one but sad to say it has not improved the unit, tnx!
@betwixt, thanks for the tip!
@mister_rf, i greatly appreciate your efforts my friend! i will do as advised and will report my findings, tnx...
yes my friend, my unit uses TC5032
found on the net, exactly the same with my unit
**broken link removed**
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yes my friend, my unit uses TC5032
found on the net, exactly the same with my unit
http://bbs.38hot.net/read.php?tid=15924
thanks for the replies,
@betwixt, already checked that my friend the socket is good so with its connecting wires to the board, and sadly i don't have access to an oscilloscope which makes it difficult for me to repair
@mister_rf, i've seen that too my friend, only the display section is the...
i recently acquired an intermittently working LEADER LDC 824 frequency counter in a deal that is hard to resist (reads from 10hz to 520mhz)
sometimes it works (reads frequency) after 20mins warmup, sometimes after an hour other times it wouldn't work even after 2hours warmup time. Also at times...
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