tzok wrote:Have you ever found an faulty electrolytic capacitor on the ST board? I haven't - either on the board, nor on the PSU. According to my experience these WANG'S CAPs were high quality, and all still, after 30 years, are up to their specs.
What is your experience in this matter?
mlynn1974 wrote:I think it is worth it to recap your power supply if you want to keep your Atari running. I had a 20 year old epoxy filled Spectrum power supply go up in smoke and was glad it didn't damage my Speccy.
I don't know if Wang capacitors were that bad. The Bad Capacitors web site was, I thought, in response to the millions of bad caps that were made in the early 2000s due to the cheap caps using the stolen Rubycon formula the plagued the PC industry for a decade. Maybe Wang were at that point bad.
I've had one ST power supply that failed and I got a replacement and binned the old power supply. I didn't know it could be reconditioned. The capacitors certainly weren't bulging but I didn't know of anyone locally that could repair it.
The thing is that most STs are now over 30 years old or are coming up for 30 years old, and that's not bad for a computer using components that will eventually fail. It's nice that there are alternative power supplies available now.
tzok wrote:I've actually checked not only the capacity of de-soldered caps, but also ESR and leakage current. For the tested units, they were all well in specs. Actually their ESR was better than some brand new generic Chinese LowESR 105*C rated equivalents.
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