Hi all,
On my latest example (brown, sn circa 5000), the yellow buttons wouldn't trigger the TMS1000 at all, or erratically so. Sometimes one button would work, just like that, and one moment later it would do nothing.
I realized that when I touched pins 2 and 3 with my finger, while looking for bad solder joints, everything worked as it should. New joints did nothing, unfortunately.
Then I tried to spray a little contact cleaner over those pins and it worked fine until the liquid had evaporated (repeatedly).
I therefore connected two small caps (330 pF) between pin two and GND and pin 3 and GND.
Now stations can be selected and memorized fine as they should.
Every single cap was replaced, new battery. No birdies or anything, strong signal and perfect sound.
As an aside, when cold, the frequency is a bit flickery on the last digit only, then after 30 sec or so, it is dead stable. And yes I've replaced the AFC cap too. All voltages as per SM right after power-up.
Explanation(s) please?
Thank you!
On my latest example (brown, sn circa 5000), the yellow buttons wouldn't trigger the TMS1000 at all, or erratically so. Sometimes one button would work, just like that, and one moment later it would do nothing.
I realized that when I touched pins 2 and 3 with my finger, while looking for bad solder joints, everything worked as it should. New joints did nothing, unfortunately.
Then I tried to spray a little contact cleaner over those pins and it worked fine until the liquid had evaporated (repeatedly).
I therefore connected two small caps (330 pF) between pin two and GND and pin 3 and GND.
Now stations can be selected and memorized fine as they should.
Every single cap was replaced, new battery. No birdies or anything, strong signal and perfect sound.
As an aside, when cold, the frequency is a bit flickery on the last digit only, then after 30 sec or so, it is dead stable. And yes I've replaced the AFC cap too. All voltages as per SM right after power-up.
Explanation(s) please?
Thank you!
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