Sony SCD-777ESD - 2nd video showing high ESR SMD capacitors on the servo board. Unit needs a re-cap

This unit needed a re-cap rather than new laser. Well, maybe both, but one should always start with rectifying obvious faults.
All small value SMD capacitors (10µF/16V and 22µF/6.3V) have ESR values from 3 to 10 times greater than specifications.
Sadly, instead of doing a re-cap, a guy who was not specialising in CD players undertook a "laser inspection", took the KHS-180A covers off and mangled it in the process. A AU$500 unit (2nd hand).
This is one of the reasons that lasers which are in finite supply are getting scarcer. Most people think that if a player does not read, it then has to be a laser fault. Which it might but also might not be.
I partly understand the guy though, because laser failure in SACD players is common. But I feel it was not in this case because and both guns are still firing well.
One can see this is not your run-of-the-mill $20 laser

[@Andre-bs5nl]

Thanks for the video again! Maybe a silly question from me: Can you measure the ESR from a capacitor which is still connected in its circuit?

[@hear-net-au]

Yes, if you have the appropriate meter. This is in fact what I'm doing in the video. Sadly, these meters are more expensive than the ones that are accurate only out if the circuit, and you have to spend around $100 on one of these.

[@paulb4661]

Is it just me, or were smt caps from the era particularly prone to this mode of, well, failure? Remember taking readings following a servo board re-cap, sitting underneath a Philips CDM mech on a Technics SL-PS7 player and miniature THT ones were pretty much just as bad. Perhaps it's simply downsizing taken to extreme more than anything else?

[@hear-net-au]

Normally small ones do have higher values of ESR. Faulty ones have values which are markedly higher than the ones which are published as within specifications

[@paulb4661]

@@hear-net-au True, it's just that when I compare most of these smaller values in tiny package from 2 decades ago or so, they are at least twice the esr or more, than that of replacements. Small value caps from quality gear twice the age, mostly give better results, but are physically much larger at a given capacity/voltage rating. Perhaps there is a pattern there?

[@hear-net-au]

@@paulb4661 yes, you could be on to something here