Fungus Attacked SMPS And Defective Loading Motor Found In IBELL IBL3288 DVD Player
This DVD player belonged to a colleague in the hospital and was brought to me with the complaint that CD got jammed inside and it did not work. The funny part is that he got wild when it gave up in the middle of a program being conducted and he slapped the front panel and on sides with an effort to take it out. Result? The panel developed cracks and found broken in several places! (Anger is not a solution but a catalyst!)
I opened the player and subjected it to thorough cleaning after removing the CD. Then studied the extent of visible damages. Did not find any capacitors ‘in the family way’ (LOL)! As a routine practice, I replaced all the electrolytic capacitors on the power supply board, since I found ESR and values far away. When I removed the tank capacitor, I saw fungus attack on the pins of the Viper22A primary switcher and rust formation on adjacent components.
I scraped the dried gum and cleaned the area thoroughly. Replaced the resistor and controls buttons on the front panel as the button switches were found malfunctioning. After this when I powered the unit, the eject function was not working. I checked the voltage to the loading motor and found it to be present. The motor apparently was defective. I replaced it along with the belt as it was a bit loose.
Then the load and eject function was smooth. I also lubricated the tracks of the tray as well as the sliding motor with silicone grease and cleaned the eye unit with an IPA damped cotton bud. The Player worked very well but one channel of the amplifier was silent. I replaced all the caps on the Amplifier board fit at the rear and did a thorough retouching of the board. But even then one channel was silent indicating a failure of the IC TEA2025B. So I replaced it, upon which both channels were working very well.
Fit the boards back and also did patch work on the cracked front panel to the extent that was possible. Allowed a few CDs/DVDs to run to its full as a check for proper working of all functions including the sliding movement. Mission accomplished and satisfaction was only more than satisfied to find its deserving place! (LOL)
Here are pictures for conclusion of this article:
This article was prepared for you by Parasuraman Subramanian from India. He is 72 years old and has more than 30 years’ experience in handling antique equipment like Valve Radio, Amps, Reel Tape Recorders and currently studying latest tech-classes conducted by Kerala State Electronics Technicians’ Association. He has done graduation in BBA degree, private diploma in Radio Engineering and retired as MD of a USA company. Presently working as Consultant to Hospital and other institutions.
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Imoudu.O
April 8, 2023 at 3:06 pm
A precise approach to a wounded dvd player and it got ur bag fatter I believe.
"cleaned the eye unit with an IPA dampened cotton bud" what do you call "eye unit"?
Parasuraman S
April 8, 2023 at 8:21 pm
The Lazer beam lens! Many thanks for your comments!
Gregory Brettell
April 21, 2023 at 10:05 am
My first thought when I read "IPA dampened cotton bud" ... Why would you use an India Pale Ale? ... LOL -just kidding ... great article!
Parasuraman S
April 25, 2023 at 3:51 pm
I looked for the meaning of India Pale Ale and then enjoyed the pun! Many thanks!
Albert van Bemmelen
April 8, 2023 at 3:42 pm
This again was a complete restoration repairjob to its extreme! This dvd player probably never would have been saved without your professional care as so many parts were defect or out of spec. I noticed the flat European 230VAC power mains plug on this player power cord. Never expected to see this very familiar powerplug on an Indian device.
Parasuraman S
April 9, 2023 at 10:27 am
Many thanks for your comments and encouragement. This type of power cord is quite common in many devices.
Waleed Rishmawi
April 10, 2023 at 3:11 pm
good job on the repair. again very professional approach and capacitors have to be envolved.. LOL. love it. thanks for sharing and have a blessed day
Parasuraman S
April 10, 2023 at 8:10 pm
Many thanks for your continued support and encouragement, dear friend! How I wish that we (all those who are regular in Jestine Yong's blog) all met together at some place and exchange technical know-how and personal experiences over a cup of tea!
Mathew Charles Karonga
April 17, 2023 at 3:56 am
Greetings
Well explained with easy to follow steps.
On the customer side I wonder if it was cost effective to do all this repair work considering the cost of new player?
On our tech side its indeed mission accomplished , well done and thank you for sharing your knowledge.
Parasuraman S
April 19, 2023 at 12:16 pm
It was worth and it was customer's choice too.
ASHRAF
May 12, 2023 at 11:18 pm
good work