Is humidity damaging my transistors?

[MikeinDestin]

I've had several old transistor radios that were working perfectly fine, then turn them on one day to find weak audio. The only thing I can blame it on is where I'm located. I really don't think this would be an issue, or at least not as much, if I was in say Maine. Or dry Arizona. This has happened way too many times to be coincidence. I'd also like to know if tube radios are less prone to damage from humidity than transistors? I currently use the old transistor radios for AM listening, and the PL- 880 for FM. This unfortunately will put an end to my antique radio collecting, because there's simply no reason to waste money just to have radios damaged. Just bought a used Qodosen DX-286. I can use that on AM too with my Terk.
Thanks to Florida!
Seriously, if tube radios are more immune to humid air, I wouldn't hesitate to use them for my dx'ing. And the Qodosen. Really appreciate any advice on this. Thanks!

 

[AB5ID]

Capacitors are usually notorious for getting weak and/or dying of old age regardless of tube or transistors type of radio.

 

[MikeinDestin]

The electrolytics have already been replaced.

 

[RFI-EMI-GUY]

The electrolytics have already been replaced.

Resistors can absorb humidity and if they are high value, there will be noticeable drift. I would get a sealed container and some fresh desiccant packs (not rice!) and leave them out in hot sun for a few weeks.

 

[wtp]

cold it be a film/dust buildup on the volume control wiper (on the inside)?
usually they sound scratchy when that happens.

 

[MikeinDestin]

I had a few radios with way out of tolerance resistors I replaced. You wouldn't believe the difference it made. It literally cut the current used in half! In one case more.

 

[owen000821]

Could be some moisture or corrosion on traces or joints, maybe around the RF section. Worth a look.

 

[MikeinDestin]

Could be some moisture or corrosion on traces or joints, maybe around the RF section. Worth a look.

Thanks!