Appreciate all of the effort that goes into what I have seen so far on these forums. Pretty amazing work!
I'm trying to troubleshoot a friend's TCL 49S405, a 49" Roku TV from 2017. Friend heard a pop and then the TV would no longer power on. I opened it up expecting to find something amiss on the power board, and I did.
Resistor R413 was burnt. It appeared to be the only damaged component from a visual standpoint. Google revealed this to be a very common burnt resistor for this board in the S405 series.
https://old.reddit.com/r/techsupport..._tcl_tv_power/
I am having a hard time determining the value of my particular resistor based on the color code. There appear to be some variations of the R413 value from board to board (see kit photo with slightly different colors). Is it a 4-band with orange, orange, silver, gold, and a meaningless black ring? A 5-band with black, yellow, grey, orange, orange?
The possibilities seem to be 0.33 ohms with 5% tolerance, or 33.8 ohms with 0.5% tolerance. Most posts including the Reddit thread linked above seem to land upon the latter, but 33.8 ohms with 0.5% tolerance seems like a bizarre choice for a commodity TV. Perhaps the kit photo of R413's relative location on the board might shed light on what its resistance value should be.
The miniature square fuse by the power input still had continuity and other spot-checked components on the board returned their proper values. Is it possible that this is the only damaged component?
I'm trying to troubleshoot a friend's TCL 49S405, a 49" Roku TV from 2017. Friend heard a pop and then the TV would no longer power on. I opened it up expecting to find something amiss on the power board, and I did.
Resistor R413 was burnt. It appeared to be the only damaged component from a visual standpoint. Google revealed this to be a very common burnt resistor for this board in the S405 series.
https://old.reddit.com/r/techsupport..._tcl_tv_power/
I am having a hard time determining the value of my particular resistor based on the color code. There appear to be some variations of the R413 value from board to board (see kit photo with slightly different colors). Is it a 4-band with orange, orange, silver, gold, and a meaningless black ring? A 5-band with black, yellow, grey, orange, orange?
The possibilities seem to be 0.33 ohms with 5% tolerance, or 33.8 ohms with 0.5% tolerance. Most posts including the Reddit thread linked above seem to land upon the latter, but 33.8 ohms with 0.5% tolerance seems like a bizarre choice for a commodity TV. Perhaps the kit photo of R413's relative location on the board might shed light on what its resistance value should be.
The miniature square fuse by the power input still had continuity and other spot-checked components on the board returned their proper values. Is it possible that this is the only damaged component?
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