[vcf-midatlantic] Atari 800 power issue

[James]

Hi all, yesterday I recapped my Atari 800 using a recap kit from Console 5.
All of the caps went in easily except for the two large ones. I blame my
recapping skills and not the kit to be clear.

I struggled to get the heat right on the two 4700uF caps, particularly the
negative side due to the large ground areas on the board sucking up heat.
To compensate, I bumped up the heat to 750F and applied heat a bit longer
than I would have liked (though under 10 secs). How hot/long can I go
before damaging a 4700uF 25v cap? I was nervous to go hotter than 750F.
It's possible I have a cold joint.

When I got the machine back together it booted up fine and was usable.
However, I noticed that if I turned the machine off, I could not turn the
machine back on again unless I waited a minute. I tried multiple known
working power bricks to the same effect.

This is leading me to believe I have a capacitor issue (because that's what
I changed and I can rule out the power bricks which worked fine prior to
the recapping and again after the machine sat for a minute).

Do you think I...

(A) fried one one the capacitors and it's now faulty? Is there a way to
test this without removing it from the board? I clipped the wires so I'd
hate to try and solder it back in if it's good.

(B) I have a cold solder joint (very possible given I struggled to keep the
solder fluid. However, I would have expected the machine to not function at
all if this were the case. Unless my issue is the capacitors are not
discharging properly which is why I need to wait a minute before turning
back on??

(C) Something else?

Any thoughts on diagnosing this is appreciated.

Best,
James