I have a JVC AV-48WP30. I replaced convergence board chips several years ago due to convergence problems and was fixed. Now when I turn it on no sound, no picture but the power indicator light is on. Is it the convergence board issue again?
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Tv colors R,G,B don't alignment any colors.Tv have a convergence problems,it dead.Tv convergence board require changes 2 STK convergence ICS and some or all it resitors to solved convergence problems.The shop will cost u $300-350 for parts and labors.
If you know how to solder, I would suggest to just replace the STKICs and some of the low value resistors. If you do not how to solder replacing the entire board is the way to to get the TV fix. You might still need to adjust the convergence after the board replacement.
Let me know if you need further assistance.
The old video card has seen better days, methinks. All those symptoms lead one to conclude it needs a 'substitute' to enter the field, or call a long TV time out(too much pro and super bowl isms, eh?)..
First of all tools,requirement to do the work on the Convergence board to do changes the 2 STK convergence ICS and some or all it resistors.U have a soldering iron,desoldering pump or soldering wicks and solders?Don't?must buy to do desoldering and soldering?Tries Amazon.com to buy solders.Tries wesites like Tvrepairworld.com to buy the convergence kit to replaced ur self,and buy the soldering iron here it have the desoldering pump attach to the sodering iron it self.For video tutoring how to take out convergence board out of the tv and replacing the 2 STK covergence ICS and some or all it resistors.Might included in the buying of the convergence kit,not,Try You Tube type in convergence problems,will have video some body doing it.
take off the front panel and unplug the convergance board up front just behinf panel if the set now comes on replace your con amps if not you have a power supply issue more than likly the con amps are bad
Number 1- don't spin your wheels on the replacement board repair the old, it can't be unrepairable. As for the over heating of the conv ic's not normal. Since you changed the conv bd and they still over heat, if I had the set I would do a reset of the registers in the service convergence mode then re-center the grn then red then blue and that will be with the centering magnets and yoke on the crt's, If you don't have a template for that then you will have to make good old fashion geometry measurement's, the green is first, every line straight vert, horz, and spaced, with of coarse the cross in the middle will be dead ctr. The overheating problem can be because the register settings are advanced to far do to corrections thru out the years with comp's changing in value and us compensating with adjusting the convergence.