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When you have a symptom of a cold start problem where the problem goes away as it warms up, you can track that down to a particular cap with freeze mist. Conversely you can sometimes make a device, power supply etc., work when it won't start or work properly cold by heating the capacitors with a heat gun or hair dryer.
That was my troubleshooting technique until I bought an ESR meter.
This computer I am on now will not start when it gets cold. I found that out when we lost power a month ago for 10 hours and the house got down to 45-50° F. Got out my heat gun, warmed up the puffed up caps, see attached, and got it up and running. Arrow points to one that vented with a little hole in the top. Haven't powered it off since! I have the replacement caps ready to install.
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