Bridge Rectifier Found Open In IBall Computer SMPS
MODEL AND MAKE: iBall ATX Switching Power Supply Model LPE223-400
COMPLAINT REPORTED: Dead
TROUBLE SHOOTING AND RECTIFICATION DONE: Opened and cleaned the SMPS, which had collected a lot of dust, as expected. Found the fuse, which was just a thin wire connected on the solder side, was intact. So applied power and looked for DC supply on the primary. This was missing.
Disconnected and checked the bridge rectifier with analogue Multimeter and found it to be open. As I had no stock of equivalent type of bridge rectifier, I used a round one and fixed it in its place. Did dry solder patch up. Checked ESR of capacitors and found these to be ok. Applied power and found it to be working very well, when tested with an ATX Power supply tester. I allowed it to work for some time before fitting it back. Mission accomplished and satisfaction got added!
HERE ARE SOME PICTURES:
This article was prepared for you by Parasuraman Subramanian from India. He is 70 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.
Please give a support by clicking on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments.
P.S-If you enjoyed reading this, click here to subscribe to my blog (free subscription). That way, you’ll never miss a post. You can also forward this website link to your friends and colleagues-thanks!
You may check on his previous repair article below: