Sony Dvd Player Repaired
This dvd player belong to me and when I wanted to play it few weeks ago, its disc tray failed to eject.
I first suspected the rubber belt maybe slack, so I pulled out disc tray, tested tray motor with analog meter….good, then check the rubber belt…good too,but then still changed it.
Fix everything back and power on,still no ejection.
So I dismantled the whole mechanism: remove lens with its rails and motor and greased all the moving parts.
Then assemble everything back and power on, problem persisted….on ejection! what do I do at this point?
My intuitive mind came to play….have you check the impulse signal for ejection operation? intuitive mind ask.
This component in the above picture receives impulse signals for opening and closing of tray from micro controller ic in main board,to test its functionality,I use small flat screw driver to turn its arm to right and lift, on lcd screen shows open and close,but tray didn’t function.This same component was doing this intermittently…at times it fails.So I pull it out for further test,i have a spare one on ground and I did continuity test on bad and spare one, the bad one was failing while the spare passed
If you zoom this picture,you will see at the upper part of circuit where is marked + on right and – on left sides. ××××I don’t know what name this component is call, if anyone knows, let me know please.
So I did replace this component with the passed spare one and assemble everything together again and power on…..Wow tray ejected out fast like an airforce officer ejecting from a fighter jet about to crash.. LOL and close fast too, this I tested a few times, it worked very well, inserted a dvd disc on tray and press play button, it played very well.
This the finished repair work.
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Note: You can read his previous article on Repair Of Supposedly Dvd Player
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Tito Kanshulu
May 10, 2025 at 4:08 pm
Excellent repair article Sir Imoudu. This open/close switch is a problem most of the times, especially when dust accumulate in the DVD player
Imoudu
May 12, 2025 at 4:16 am
Muykit,
Oh...you make me laugh..Ooo,thanks for all ur comments
Albert van Bemmelen
May 10, 2025 at 4:15 pm
Nice job Imoudu. Never have seen these plateau sensors before. So I can't provide any info on those either.
It was a very lucky thing you had a good working spare one at hand!
Waleed Rishmawi
May 10, 2025 at 10:22 pm
I had an issue like this and I just used deo-xit and worked like a charm. This part collects a lot of dust so cleaning did it for me. Thanks for sharing and have a blessed day
Yogesh Panchal
May 10, 2025 at 11:33 pm
Good Job! Imoudu
Parasuraman S
May 10, 2025 at 11:46 pm
Good fix and excellent and hilarious narration too! Enjoyed the pilot eject! Many thanks for sharing!
Mark J
May 11, 2025 at 2:33 am
Imoudu good job on the repair thank you for sharing.
Imoudu
May 11, 2025 at 4:36 am
Tito.k
I never knew dust can affect it, infact I never repair dvd having this kind of problem.Thanks for the information and comments.
Imoudu
May 11, 2025 at 4:41 am
Albert van. V
Yes,you are right, I extracted it from an discarded sony dvd player.Thanks man.
Humberto
May 11, 2025 at 7:47 pm
Good job Imoudu, congrats
Muykit
May 11, 2025 at 8:29 pm
Its like you have landed from space to arrest a "NATIONAL CRISIS". Good article, clear explanation and nice photos. I have the faintest idea what the control assembly that you ask about is all about. Knowing deeply about DVD starts with understanding well the full meaning of DVD and the DVD disc design features, now add to it DVD player complicated operation. There is far much more to it than I thought. I abandoned the hectic exploration mission and so did myself a favour of saving my head from explosion. On a lucky day I heavily relied on human senses and common sense to repair a DVD player. For instance, DVDs run faster than VCDs. so whenever a DVD rotates abnormaly slow and so hindering expected playing, I would tackle the disc-running motor circuit or the motor itself. And if the lens wasnt working, checking its flex cable condition and lens cleaning is what I would do. Of cause I also did the normal SMPS repairs that prevent proper DVD player functionality. SIDE-ISSUE; I THINK I LIKE THE MOVIE IN IT.
Imoudu
May 12, 2025 at 4:18 am
Parasuraman.S
Safety is paramount to human life,thanks sir
Imoudu
May 12, 2025 at 4:20 am
Thanks to you all for your comments
Jim
May 12, 2025 at 7:21 am
Great Job! .. glad you had a spare!
Boris
May 12, 2025 at 5:38 pm
Ha, I basically had the same issue with my dvd player last week! The tray wouldn't open, I scratched my head a lot around it but it wasn't a bad component, but more a mechanical issue, altough it looked still well lubricated, I greased it and started working. The tray and loading mechanism is the same as yours, even though mine is a very cheap model. I guess in the end there are very few transport mechanisms and that they are each used by a wide variety of manufacturers. Still, it would have been helpful if I had your article at hand before attempting to repair mine... 🙂
AdamS
May 12, 2025 at 9:57 pm
Hi Imoudu, great repair, but this component is simply a limit switch that registers when the drawer is fully open or closed. It doesn't actually cause the drawer to move but gives feedback to the controller to tell the circuit that the drawer is fully open or closed, and to stop driving it.
That said, when it fails, it will cause problems, as the control system won't know whether the drawer is closed and needs to open, or is open and needs to close. In this situation, it will simply stop working (as you found!)
Imoudu
May 13, 2025 at 11:51 pm
Adams
Thanks friend for this new information about the working system of this switch.Have nice day
Imoudu
May 13, 2025 at 11:56 pm
Boris,
What gives joy to a technician is seeing a faulty device is brought back to functionality which you had done to your dvd player.Keep enjoying it.