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Repair kit for Panasonic TC-P42S30 TC-P42ST30 SN board TNPA5349AB / TXNSN1PKUU / TNPA5349 causing 7 or 14 blinks error code

If your Panasonic TC-P42S30 or TC-P42ST30 fails to start and the red LED blinks 7 or 14 times this is likely the DIY repair kit you need!

Coppell TV Repair LLC offers you a repair kit for sustain board TNPA5349 used in Panasonic TC-P42S30 and Panasonic TC-P42ST30 plasma TVs.

The repair kit contains parts for at least TWO different failures we have seen on that board. One is indicated by 14 blinks error code by the TV's LED and can usually be diagnosed by a shortage on any or all of the following components: Q401,Q402,Q421,Q422.

The other is indicated by a 7 blinks error code and is caused by shortage in Q441 and D481.

In our experience you do NOT need to replace the screws for the board, but you DO need to make sure you reflow the solder on the back and top of the board where screws go as it may have gotten damaged and corrupt over time.

If a DIY service for the board looks too difficult you are welcome to send it to us for service and testing.




Failure symptoms

See above.

Kit contents

Brand new replacements for Q401,Q402,Q421,Q422, Q600, Q441 and D481; other components may be added over time if experience reveals necessity of including them.

We recommend replacing all components , but you can also selectively only replace those that test shorted on the board.

Difficulty level

Easy to medium. We recommend using hot air gun for desoldering of the old components and either the same and/or at least 50 watt soldering iron for soldering replacements in. No soldering aids are included in the kit.


Normally ships within 1 business day. Unexpected delays may occur, but if we can't ship within 3 business days we will contact you or/and cancel the order.

We try to ship every business day M-F and, for USPS shipments, Saturday as well.

Items under 14 oz are normally shipped with USPS First Class mail unless other option was available and chosen during checkout.

Packages of 1 lb. and above are shipped USPS Priority, FedEx Ground/Home, subject to our decision.

ATTENTION INTERNATIONAL CUSTOMERS: If your order is accepted by our store and your address is outside United States you may not be able to track package delivery progress once it leaves the country. The United States Postal Service (USPS) does not provide tracking information to some countries unless the shipment is the most expensive Express type, which is usually too expensive to justify using. You can accept that condition and strip Coppell TV Repair LLC of responsibility to the delivery status of your package provided we show it was shipped and processed by a courier in a timely manner. Or you can contact us prior to ordering and inquiry for delivery confirmation shipping method, which, again, usually costs an arm and a leg compared to the simple USPS First Class shipping.


Coppell TV Repair LLC does not guarantee that this product is all that is needed to resolve the problems with your TV.

Most of the repair kits we offer are based on first hand experience servicing boards at our repair facility. 

Over time they may get expanded with our own experience or information from manufacturer service bulletins, customer feedback etc.

Yet failure can be unique and there can not be guarantee that what has worked one, ten or even hundred times will also work the next one.

Just as important, every repair involves about equal portion of quality of parts and quality of worksmanship and as we have no control over the worksmanship quality unless we are the ones performing it we would be unwise to provide warranty of the products utilized by that worksmanship.

As such, no warranty is offered on this product once the components in it are soldered on a board.

If you would like warranty please see if a REPAIR SERVICE is offered instead of a kit. Unless otherwise noted all our repair services do come with a standard warranty.