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Repair / Exchange service for Z-sustain board 6870QZH104B used in a number of different 42'' plasma TVs, all utilizing LG display technology despite their different brands


CoppellTVRepair offers a REPAIR / EXCHANGE service for your Z-sustain board 6870QZH104B. Those boards are used in a number of different 42'' plasma TVs, all utilizing LG display technology despite their different brands.

REPAIR / EXCHANGE means that you have to send in your malfunctioning board. Upon receiving we will service and send it back, or we may send you a pre-serviced and tested board if we have one available.

When possible, we usually send back a pre-serviced board so that you can start enjoying your TV faster.

However, in case we do not have serviced boards readily available we will have to keep the board in for day or two before sending it back.

Processing time

Typical processing time for the repair is within two business days; if we have any probems that require more time (be it overload or technical problems) we will contact you with an update and request for more time.

We have a fairly high success ratio, but we still do not guarantee success; if we can't get the board to work, though, you will not need to pay.


Presently we do not charge in advance for repair services.

Instead, once the board(s) are received, tested, found to be defective, serviced and tested again to success we send a payment request to the customer.

If something along the process - such as unexpected difficulty or finding a board to be functional - arises we contact the customer via email and/or phone and disscuss options.

Minimal charge / diagnostic fee

If a board arrives and is determined to be functional we charge up to $25 for diagnostic fee.

For explanation of why do we do that please read this article.

Board requirements

We ask that the board arrives here in good physical condition and without traces of tampering. If someone (other than us, that is) has already attempted to service the board then please contact us with a description/pictures and do not directly place an order. We reserve the right to refuse service to boards that have signs of repair attempts.

If you have any questions do not hesitate to ask.