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No Eject & No CD Problems in Vinverth DVD Player Solved
I got one Vinverth VGDP330PQBC with the complaint that NO CD is displayed and tray does not open. After opening the DVD, and doing general cleaning, I noticed that the eject tray was stuck and cannot be moved at all! So, I guessed that someone has forced the tray in by hand, in the process of which the tray would have jumped out of its groove. I had to pry the tray out carefully. After removing the tray I noticed that the teeth are broken in a few places. See the first picture. The other pictures are of the mechanism unit top side and bottom side:
From the third picture, you will notice that this has a special eye unit, with four mounting screws on a plastic frame. The sliding motor is fit facing downwards.
I manually loaded a DVD on the mechanism and tried to run and noticed that it runs clockwise for some time and then suddenly reverses and again vice versa. I tried with a few DVDs, with the same result. Cleaning the lens, replacing the ribbon connector of the eye unit etc. did not help at all. Caution: When replacing ribbon connectors, we need to check whether they are opposite side or same side. Otherwise, it will burn the eye unit or the mother board or both! In this case, it was opposite side. So, I used the correct connector. The only way now was to connect another mechanism with its eye unit. So I bought a new tray of Alpine and eye unit of Sanyo:
I studied the sliding motor, spindle motor and switch connections on the Vinverth and also of its eject PCB connections. I noticed that while the SL, SP and SW connections were in order, the eject motor switch connections were slightly different. The in and out of the switch were opposite in the new tray. So I interchanged these connections to suit the new tray, by sliding out the pins from its connector. On switching on, the DVD worked perfectly well. We have to remember one point here. The connections from the mother board should match exactly with the tray and mechanism unit, pin to pin. So, it may be necessary sometimes to remove the board and study the markings made on it. Otherwise we are likely to spoil both!
But, now the problem was: difference in height of the trays. The Vivenverth Tray is a compact one with lesser height, whereas the newly bought tray unit was slightly higher, which means the tray would not come out through the front!
Please see pictures below:
So, I had to remove the front panel, and file the top portion of the mouth of the panel, through which the tray comes out. Simultaneously, filed the front two legs of the tray unit to the extent that it is short enough, but ensuring there is enough room at the bottom for the eye unit to move down, while the tray comes out. This took several attempts of fixing and trying, before the tray unit got fit perfectly! Each time, I had to take the tray out, file either the panel mouth and/or leg, promptly removing the dust collections. See the areas, which I had to file:
The first picture is that of the leg (before it was filed). The second one is that of the mouth. The area highlighted by two upward arrows, is the one that I filed to let the tray out. See the gap formed, marked at the top with a right arrow, which I have covered with cellophane tape. After doing these entire ‘circus’, I connected the unit and tried. It worked very well! So, I put the cover back and switched on to retest it and ran it for several hours without any hitch!
Another job completed with the satisfaction of fulfilling the slogan that a technician’s job is to achieve the result by hook or crook, and face the challenges of any kind!
This article was prepared for you by Parasuraman Subramanian from India. He is 66 years old and has more than 30 years’ experience in handling antiques equipment Valve Radio, Amps, Reel Tape Recorders and currently studying latest techs classes conduct by Kerala State Electronics Technicians’ Association. He was a BBA graduate, retired as MD of a USA company.
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