Re: TCL 49S405 burnt resistor R413 and will not power on

I replaced the power board and everything seems to be working normally now.

Re: TCL 49S405 burnt resistor R413 and will not power on

I tried replacing resistor R413 all by itself and... no dice. Figured it couldn't hurt to try.


R402 and R421 look to be in rough shape, now that you mention it.

To save time, I am going to purchase a new power board while I continue looking into this one....

Re: TCL 49S405 burnt resistor R413 and will not power on


Thank you so much, very good to know that info.

I will start by purchasing a set of 0.33Ω 1W 1% metal film resistors from Le 'Bay....

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.

[url]https://old.reddit.com/r/techsupport/comments/oqw9mi/help_identifying_burnt_resistor_tcl_tv_power/[/url]...

Re: New Members - please post your introductions here

Midwesterner about to embark on troubleshooting TVs for the first time.