Need 12qp4 picture tube

[Electronic M]

There are currently no rebuilders of vintage CRTs in business. The last one, in France, closed a year or two back, and the Early Television Museum's efforts to start a rebuilding business are a ways off of even doing test work with the gear they have.

Make sure to test the CRT with a proper CRT tester before declaring it bad...Also CRTs that test mid way in the bad region of a CRT tester's scale can still produce a watchable picture especially if you add a CRT brightener.

On the bright side if your tube is bad it should be easy to find another as many models used that type, though many of those models are very collectable (read expensive) thus a replacement will likely be costly.