A shorted DVD player brought back to life. Model: Kakasumi IT-Divx100B
I have repaired this DVD player before but this time when it arrived in my shop, it showed a different problem. It was completely dead.
Only a few screws off and I could see the inside of this DVD player. It is a china made DVD player and the quality was not the best. These DVD players are very cheap in my country but people are still willing to get them fixed than buying new ones.
Many have been asking me to show the light bulb trick. I have connected a 100 watt light bulb to the main fuse terminals and the light bulb came on but very bright.
This is the sign of the shorted DVD power supply. Before adding any parts and powering up the machine, I need to look for shorted parts in there. If there was no light or it was dim, that means the short inside this power supply is gone and it is safe to power it up. I hope that will give you some understanding of how the light bulb trick works.
When I unplugged the power supply and started to check for shorted parts, this is what I found.
One of the legs of this capacitor (48uf/450) was missing and that was enough to cause a short in the DVD player. If you trace this capacitor, it is connected directly to the main power IC, and guess what? It was shorted too.
It has a strange part number but I was able to get it from an old power supply that I have in my shop. I was really lucky to find this kind of IC because I looked everywhere and I could not find it. I almost gave up on repairing this DVD player but while I was looking for another part in my shop, I found exactly the same part number. I soldered this IC back on board and I forgot to do something. I forgot to take a picture of the light bulb connected to the fuse terminals to who you guys how it look like. I promise I would do it in different repair session.
The DVD player came back on and it displayed a very nice picture. Another easy fix that came to my shop and was glad to get it fixed. Mission Accomplished.
This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.
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