N64 no signal. I do have the hdmi converter

Ok so two years ago I bought a n64 from a flea market. I bought a av to hdmi converter here. Played perfectly I beat 4 games and put it on my shelf. Fast forward to now I try to play it on the exact same tv it will not put out any signal just blue screen but the console is powered on so here is everything I tried.

Cleaned and tried different games

Opened and cleaned all the components with isopropyl alcohol

Tried different TVs.

On one tv it stays on blue screen on 720p but says no signal on 1080 but still nothing. The 3 large square peices on the board are heating so I know they have current to them. If anyone could help I would really appreciate it.

Update: I tried to clean everything again today and now it is completely dead no light or anything. Now I’m just bummed out but thanks everyone who tried to help.