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The production fault was to flow-solder them too hot, and the capacitors started to deteriorate from that moment on, usually conking out after about 15 years. If (very carefully) replaced with ceramics, the radio should last virtually for ever.
When working correctly, they are one of the best small shortwave sets you can buy, even today. I previously had an ICF7600DS, which I gave to my younger son when I got a new ICF-SW7600GR, the last model in the line, in 2003. That will probably work for decades, as all the bugs had been worked out over the preceding 20 years. It's my totally overkill alarm radio!
I like radios!