I love your repair videos. I've been trying to learn electronic repair as a hobby. Insightful as always.

15:59 That little noise before you ejected the stamped cd is the exact sound that my 5 CD changer was doing only on slot 2.

I was too. thank you for your hard work. 👍

Not wasted time by any means, I found it very informative on the internal workings of a cd pickup.

@12voltvids

2 ай бұрын

Next up i change the light bulb in this one. That's more work that you would think. Thanks Sony.

A great video, 12v! I have a few units on the bench right now. Mid / late 1980s units. One has Sony KSS; the other has Sanyo. Quits (gives up) after 5sec of spin as they cannot achieve TOC. I have heard of cleaning blow the lens. Might want to try Windex or a glass/plastic de-hazing compound. Having a lot of photons -- laser, even normal light, with heat -- go thru the optics can degrade them . Maybe why certain car headlight haze. Plastix may help, but tricky to apply at that scale!

Love the form factor of these. i bought a Sony D50 from Japan and it works great

It's like a cataract on that mirror.

shame that some of the old decent music gear have unreplaceable parts, thank you for another usefull video

@12voltvids

2 ай бұрын

Yup they change and improve part designs and the old ones go out of production.

I really like these more compact devices. Most full size HiFi devices are just big empty boxes of air. Cool scope btw, have you replaced the calibration data backup battery?

@12voltvids

2 ай бұрын

What on the scope? No i haven't it was done before i got it. Where is it?

@WolfmanDude

2 ай бұрын

@@12voltvids The scope has a lithium backup battery inside that holds the calibration data in memory. If that goes empty you have to do a massive calibration procedure with special test equipment. It happended to me when I was younger, was a huge disappointment :( I think there is a EEV Blog thread about the problem.

Thanks for another video very educational I recently worked on a Krell amplifier wow was I disappointed when I opened it up cheap capacitors silicone pads instead of thermal paste lots of blown up output transistors what a piece of junk I fixed it but not well made looks well man but it ain't 13,000 what a piece of shit have a great day I enjoy your videos and learned a lot from you thank you

@12voltvids

2 ай бұрын

Doesn't matter what the cost there is crap everywhere. A few of my snowflake viewers get upset when I call a spade a spade or in this case crap shit.

I don't have a camera that does night shots, except a wildlife camera. I don't know if I can use it to see the LED. I use my phone camera. Interesting, though. I like seeing these repair videos.

@12voltvids

2 ай бұрын

Most of mine do

@markmarkofkane8167

2 ай бұрын

I tried it with my remote, and my wildlife camera did see the light. But I am not sure if it uses night mode in light. It doesn't have an option (I don't think) to switch to night mode. It just lights up infrared LEDS? to provide light that the camera can pick up (black and white view). The LED on the remote did seem brighter.

@12voltvids

2 ай бұрын

The ir filter switches automatically just like with security cameras.

Nice unit, pity the laser module is shot, much appreciated detailed explanation & showing us what is what on the actual laser module itself (pardon my ignorance if that's not the name for it)

@12voltvids

2 ай бұрын

Optical pickup is the official name.

@ShazeemKhan

2 ай бұрын

@@12voltvids right, thanks 🙂👌

For a while there in the early 2000s I would go buy Chrysler factory CD players at the salvage yards and then tweak them so they could play my expensive 99 minute CDRs. Usually required a slight laser power adjustment and fiddling with the tracking offset, but it would work well enough for most of those things. I didn't care much about the laser lifespan because those factory decks were cheap at the time and my 99 minute media was very not cheap.

@12voltvids

2 ай бұрын

Why would you record on non standard media that only specialized equipment could read. Even the 80 min are iffy on some machines. 74 play on pretty much everything.

@Oklawolf

2 ай бұрын

Didn't know they were going to be so problematic when I bought them and wanted to use the discs I paid good money for. As I recall most of those Chrysler head units out of the yards couldn't play CDRs at all before I got into them, and the ones that did only handled the darker types. Once I could get them to play the 99s, they usually never gave me another problem with CDRs.

Seems the laser is dealing with a cataract.. it's a shame there's no quick replacement. I saw the cloudy

@12voltvids

2 ай бұрын

Yup, it's toast. The owner is going to pay me to change the light bulb on the display. Will deal with that tomorrow. Have to get a few bulbs.

Would some IPA not have helped in the cleaning of that lens?

@12voltvids

2 ай бұрын

Well it will remove the dichroic coating then it will never work.

i got a free samsung uw-17j11vd crt today has working vcr and DVD bult in also. nice find not had a crt for years

@12voltvids

2 ай бұрын

I have a big 27 crt with VCR and DVD I will put up on the bench and look at some day.

@EastAngliaUK

2 ай бұрын

@12voltvids nice I don't think I could lift a 27 inch one.

According to HiFi Engine this player is from 1988.

You could say that the lens block has a cataract. No surgery for this one.

Is someone using a high-pressure cleaner in the background?

@12voltvids

Ай бұрын

What kind of stupid question is this?

Sony CD pickup's are simply not reliable; in pure Sony style they are overly complex and a minimal misalignment of the diffraction grating (generating the three beams) causes a failure in locking to the bit stream. The laser power is measured right on the laser diode so the actual power reflected by the disc and sent to the PD's could be affected by contamination in the optical path. But you saturated the RF signal, meaning amplitude is not an issue. One of the three servo's is not locking; focus seems to work, maybe tracking or clock recovery is failing.

This is a common problem of Pick-up cataract disease

@12voltvids

2 ай бұрын

Yup not designed to last 40 years.

fucked beyond all repair this one