WOW, I just read where you helped soneome with their TV and thought how awesome. Maybe you can help me! MyTV gives like a 3d affect with three different colors separated. Do you think you can tell me where to get the IC's and how to fix it? Is it difficult to fix? Thanks so much!
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Re: STK convergence ic replacement and instructions
Heres the link to get the ICs with free instalation instructions . Its an easy fix. If you leave them a email with the model number of your set they will contact you quickly with the correct IC numbers for your model. Heres the link. http://servicemanuals.vstore.ca/
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Ur tv convergence board that was replaced for ur tv.The 2 STK convergence ICS was old it is not new it is those 2 STK convergence ICS on the tv convegence board is dead again and some of the resistors on the board maybe shorted and dies also must replaced too.The tv convegence board was put on ur tv those parts on the convergence board are old components parts,ur must repair tv convergence board again to fixed this problems called convergence pictures problems.
It is very possible that the IC's were not installed correctly. Check and make sure you do not have any solder bridges on your pins, or that the solder pads did not pull up from the board. If all that looks good, check your resisters that are in circuit. It is possible that 1 or more was already week and popped when the new STK's were installed. Also as far fetched as it could be, you might have gotten defective parts though not likely. I hope this helped and good luck to you.
Always replace both once your going to the trouble each IC is usually less than $30.
This link will help show you what's involved. convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks! See link for more detail http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html
You don't need to replace the whole board, regardless of which board it may be mounted on. The STK IC convergence chips alone are all that need to be replaced. You can order them from a number of different online sites. You can try Alibaba.com. If you have any more questions, feel free to ask!
The colors seperating is a convergence problem, as far as being dim this may be related but the TV likely needs service adjustments. convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks! See link for more detail http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html
Hi, This problem is related to the convergence, but it requires replacement of IC STK from one of them who control convergence, check both and replace faulty IC STK from new one and your tv work fine again. You can buy the convergence IC's from the link click here. Thanks for using fixya.
The power supply has an automatic shutdown circuit
that senses a shorted component and excessive current flow.
If you can access the convergence board and remove the plugs one at a time
(red, blue or green) for the convergence output, the TV may start up and show a
picture with the unplugged color misaligned.
This confirms a short in the convergence output. The convergence IC failure can
show up as coloured outlines or power supply shutdown.
If this does not help, then there is some other short circuit in power or
deflection circuits. You need a technician to troubleshoot HV or power
Replacing the output amplifiers
(located within the Convergence IC's) allows the pictures to line up
correctly, and no more color outlines or power shutdown.
This is the most common fault in all makes of rear projection TVs.
Some models of TV require major disassembly and considerable
shop/manufacturer's support to repair because of their design that causes other
power supply or vertical deflection problems. The poorly designed products
require a "bench" repair that can typically cost from $350 t0 $700.
Some TVs are designed for on-site repair and have more reliable circuit design
that does not usually cause damage to other parts of the TV when convergence
chips fail. The ones that usually allow reliable on-site repair are JVC,
Samsung and Hitachi.
It is normal to have some resistors in the circuit burn up or increase in value
from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced
with the right value or the chip may fail again.
This is not a simple repair like changing batteries or a fuse. Reading
through the other posts shows many that try and end up with bigger problems.
Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with
other "new and improved" IC's, like STK 392-150. These are
devices with different characteristics and require different value resistors in
the circuit.Replacing with the STK
392-150 will cause overheating of the resistors and a damaged IC.
If you are in Calgary, I can help. If not, get someone that has experience
working on your JVC. My website is below with some costs and explanation.
Replacing only the ICs MAY solve the problem, however, many people have also had blown resistors requiring replacement. Also the convergence board should be checked for cracked solder. If you replace the ICs and the resistors are shot, the ICs may blow again almost immediately, meaning you may have to do the repair twice. You do not have to replace any transistors to fix this convergence failure.