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No Power In Telesonic DVD Player Solved
Customer sent to me this Telesonic DVD player with the complaint of no power symptom. As usual I had to test it first by connecting the AC plug and it was indeed no power.
Once the cover was removed I could see the main filter capacitor bulged and when I looked at the side view of the circuit board, I saw the main filter capacitor sleeve melted and the resistor located in front of the capacitor, the leg was rusted-see the photos below:
Both of the components were removed and after that I checked on the main fuse. In fact you can check on the main fuse first if you wish to. I found that the main fuse was also bad (open circuit).
Next, I checked on the power IC pins and found that it was shorted. I proceeded to check all the components in the primary and secondary side and found there were five bad components-see the photo below:
After the replacement with good component, I used the series light bulb test to really make sure there was no longer short circuit. Otherwise if there is a short circuit, the components that I had just replaced would blow again.
The bulb lighted up for a while and went dim which indicated a good sign that I can turn on the DVD player. I put in the new fuse and powered On and the DVD player came back to life again-see the two photos below:
Conclusion- If you wish to learn how to repair DVD player like a professional , I suggest that you get Humphrey’s ebook HERE. He does provide technical support if you encountered problem in DVD player. Ok, see you again in the next article soon.
This article was prepared for you by Suranga Bandara who owns an Electronics repair shop in Anuradapura, Sri Lanka.
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