Question about Televison & Video
If the problem is alignment. Most of the time the problem is caused by a defective convergence IC.
Before going for the ICs have a look at the deflection youke (I think this model is a CRT, I cannot find service manual for it)
The repair is done replacing the convergence ICs. This cost about $10/$20 each.
I think that the IC on this TV are STK 392-110, the number is clearly readable on top of the IC. Often the ICs can be replaced with ICs that support a biggger voltage (eg. STK 392-110 with STK 392-150).
You can order the ICS online, for example contacting any of the sellers below. The repair must be done by an experienced person.
Encompass Parts Distribution
Appliance parts, electronics parts & more from PartStore.
Alternatively read the number on the IC (eg.STK 392-110) and put it in google shopping to find a seller in your area.
The convergence ICs are two power amp STK chips, located on the convergence board. This must be desoldered and replaced with the new STK ICs, that must be soldered using coolant paste.
More components may need replacement and must be tested. Resistors in the convergence board must be tested to ensure that they have continuity (read Ohms and ensure that circuit is not open). Some TV have also resistors placed near to the connector with the main digital board. This have function of pico fuse and must be tested and eventually replaced.
Also inspect capacitors on convergence board. If any of them is bulged, replace it.
Here the ICs mounted on convergence board:
Here a description of the procedure needed to replace the ICs done on a different model.
Posted on Jun 02, 2010
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Posted on Jan 02, 2017
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