Coppell TV Repair LLC offers brand new, programmed replacement for the NAND flash memory component U12 used in main board 3655-0342-0150 from Vizio M550SV Smart LED TV.

NAND flash / EEPROM is a surface mounted component device (integrated circuit) which stores information; there are EEPROM ICs in every USB flash memory drive for example, as well as all solid state hard drive devices.

This listing is for the surface mount component ONLY and NOT for the entire TV main board!

Please read carefully the below information and specifically the warranty conditions section!

Failure symptoms and warranty disclosure

The EEPROM U12 is known to fail and develop a symptom of TV responding slowly to remote and buttons to a point of eventually hanging and rebooting.

Other issues are are also possible, of course, but this is probably the most common one we have seen.

For the record, we have also seen the main processor and the HDMI IC fail on this main board.

We are not aware of a simple and reliable way to tell if and when EEPROM is bad , let alone ONLY bad component on a board. See the disclaimer section below for more.

We do guarantee that the EEPROMs we sell are tested and are in good working order.

Difficulty level: Medium to advanced. Removing the old IC and soldering the new one requires somewhat advanced soldering skills and equipment. We recommend using hot air as opposed to soldering iron and wick.

We do not provide guide on how to perform the replacement, but offer board repair services to customers who do not want to undertake the repair themselves.

Repair service offered: Yes. If you consider the job too difficult or if you have reasons to believe the problem is not in the memory IC or if you would like to use the benefits of the warranty our repair services carry (and which our repair kits do not) search at our store for a risk free repair service.

Disclaimer, warranty and returns

Coppell TV Repair LLC does not guarantee that this product will resolve the problems with your TV.

Data corruption in EEPROMs can occur at any time for different reasons.

We are not aware of a simple and reliable way to single out a defective / corrupt memory IC.

When in doubt, we ourselves simply take the memory IC off the board and test in in a good working board to see if the problems move along with it.

Since this is usually not possible for most customers, including most TV technicians out there, by ordering an EEPROM you are undertaking a risk of replacing once potentially functional component with another which, of course, will not resolve whatever problem the TV would be having.

By placing an order you agree you understand and assume that risk, which we can not help avoid unless you send us your board for repair.

We guarantee all our EEPROMs are tested before slated for sale and we offer you functionality proof video of the EEPROM we will send if you request it PRIOR to placing an order.

For a video showing how we test U12 for M550SV before we use or sell it see video "51toWXuN8Cw" in our YouTube channel; alas eBay does not allow us to include neither link nor video itself here.

We welcome return within specified time frame for any components that have NOT been soldered.

We offer free returns and refund of product price for components that have NOT been soldered.

You agree you will not be sending back ICs that have been soldered or otherwise mechanically or chemically modified.