What videos / tutorials you recommend for getting into recapping or restoring vintage hardware?

[Gunbound]

I have a laptop from 90s that I last played with maybe 3 years ago but I have heard old machines being fine one day and going bad after turning on because some caps went bad during storage. I don't want to lose this machine. So how can I determine if recapping is appropriate for the machine or if they are of high quality and I don't have to worry (if that's a thing after 2 decades). I just need some starting points you highly recommend to start at and any other related restoration techniques I might want to also consider for preservation. CMOS still worked last time I checked funny enough o_o
P.s. already familiar with soldering and I have a little station for that.

 

[Harlow]

Have you performed any internet searches prior to asking here? There's loads of information on bad cap replacement just a few clicks away.
https://www.badcaps.net/

P.s. already familiar with soldering and I have a little station for that.

The ability to solder (join two components by melting solder) is completely different from the art of desoldering, especially removing bad electrolytics without ripping the plated-through holes out of the board and lifting pcb pads with too much force/heat. Experiment for several hours on a few old boards before attempting anything important. You can destroy a perfectly good motherboard in less than one minute if you're clumsy.

You need the right amount of heat (often lots for a short time), the correct shaped soldering iron bits, high quality desolder braid, skill and a bit of luck. I use 60/40 Tin/Lead solder in preference to Lead-free solder which melts at a higher temperature. Some components need a hot air workstation, solder paste and separate flux. Use unheated "solder suckers" with care, especially when clearing holes blocked by solder. You can lift pcb pads by mistake when the solder cools in the air stream.

My advice is leave well alone, unless you can see obvious signs an electrolytic has burst. An ESR meter might be handy to check capacitors which still look OK.

 

[Shrek]

I have a laptop from 90s that I last played with maybe 3 years ago but I have heard old machines being fine one day and going bad after turning on because some caps went bad during storage. I don't want to lose this machine. So how can I determine if recapping is appropriate for the machine or if they are of high quality and I don't have to worry (if that's a thing after 2 decades).

If the tops are bulged, replace, otherwise don't worry.

 

[Gunbound]

I'll dismantle and take a look during repaste later next week. I'll leave it be if there's nothing thanks guys. and no I did not do any research. I seen too many articles for stuff I look up recommended in the past, I just wanna punch a hole through the screen. I chose to avoid that. I did search the forums though on the topic, and the potentially good one I found no longer had photos available from 2013. I was a little impulsive too.