Marantz 2235B delayed loud static

Howdy all! Just pulled out a 2235B a friend gave me 10 years ago as junk and start the process of cleaning it up.

I looked it over, took,off the top and bottom and blew some air through it. I took the faceplate off and loosened the board with the tone knobs on it and got my deoxit straw nice and close to the controls and moved each control 20-30 times.

I put it back together and it powered on fine, the frequency band light looks like it’s out, no big deal. I powered it off and connected some known working Dayton B652s (6ohm). And my phone I to the tape 1 in and powered it on.

It sounded incredible for about and after about 10 seconds I turned it up a bit and it sounded great for another 2 seconds then it started popping, which was followed by a very loud static that appeared to ignore the volume switch.

I quickly disconnected the speakers.

I have researched this a bit and the delay seems to indicate capacitor failure which I’m aware of being standard on old audio gear. I also think that the fact that the static was on both channels may mean power board capacitors.

Just posting here to get any hints I can as I research this, I’m ok at removing through hole components and I can solder very well so I’m up for a challenge, it really sounded good not mention the value of these units in working order.

Also any hints on where to look at possibly repairing some Dayton Audio 652s that have sounds that cuts in and out repeatedly and repeats fasts as the volume is increased?

thanks a ton in advance.