|
No need to remove the back for convergence trouble on this one. Just remove the front bottom. The screws are in the back sides. In the front you will see the convergence board with 2 STK392-110 convegence output ics. Replace both and check for any overheated low ohm resistors. The value of those resistors is very critical.If any are off by even a few tenths of an ohm you won't be able to obtain good convergence. With a new set of STKs and no changed value resistors it should only require minor adjustment which is available in the customer menus.On removing the back as long as the set is unplugged you're ok.The set can be run with the back off with the digital module unplugged but you won't need to remove the back for your problem.Just be careful with the convergence board.It is very flimsy.
P.S. Make sure you buy Sanyo original STKs. Do not buy them from MAT or any of the discount electronic houses. The generics are knockoffs made in China that don't have the power handling characteristics of originals and will cause you much grief.I've seen generics send all 6 low ohm resistors up in flames in a Samsung widescreen the instant the set was turned on.Tritronics carries Sanyo original ics. You don't have to buy them from JVC. Sanyo makes them for all the original manufacturers.I change several sets every week on a wide variety of brands of projection tvs. They are high failure items much more so than in older projection tvs. 2-3 years for modern ones verses 8 years or longer they lasted on older projection tvs.My mom's 1987 Mitsubishi projo still has the original STK4273s in it. Unbelievable that that tv works as good as it does with the amount of hours it gets on it.Still a good sharp picture.
|