Thursday, July 26, 2018

Component-Level TV Repair (From the archives)

Back in 2016, My dad was watching TV, and he heard a loud pop and then the TV stopped working. No lights turned on whatsoever, which meant it might be a problem with the power supply. It was a 42 inch TV, and would probably cost over $300 to buy a new TV.
My dad decided that we could try to fix it because it was already broken and I couldn't make it any worse. When we opened it up, I saw a bulged capacitor and a soot stain around a chip on the power supply board. I told my dad which parts to buy on Amazon and Ebay, and I also needed a desoldering tool.
I practiced with the desoldering tool on some scrap circuit boards before I started on the repair. First, I removed the old chip and the old capacitor. The new capacitor was too tall to fit in the case, so I had to extend the leads and attach it sideways. The other solution would have been to drill a hole in the case, but that would have looked messy. I added a socket for the chip, which means that it will be easier to replace if it ever fails again.
The cost of the repair, including the capacitor, chip, set of IC sockets, and the desoldering tool was less than $25. The hardest part of the repair was removing the TV from the wall mount. The repair was successful, and has continued to work for over 2 years now.
 The black square in the middle is the chip.
This is the capacitor.

Amazon Affiliate link for the IC sockets I used: https://amzn.to/2LUCy4a
Amazon Affiliate link for the de-soldering tool: https://amzn.to/2uUWqxj

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