Returned to repairing the Roland SC-55 I had on my bench a few weeks ago. This was the unit with the faulty resistors on the rear MIDI input.
The resistors are in a really awkward location right next to the giant plastic MIDI ports. I didn't want to use hot air or a regular soldering iron to try to remove them.
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I'd been waiting on getting tips for my new soldering tweezers. After several weeks on backorder, they finally arrived.
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Using these soldering tweezers for SMD removal is a dream. The two resistors came off with virtually no effort and no risk of damage to adjacent components. Pads cleaned up well too.
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Soldered the new resistors in place and did the MIDI input test. It finally passed. Did some subsequent listening via the rear input and everything seems to be working fine.
I still need to replace the tactile switches on the front panel, but I'll save that for another day.
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