Hitachi 43fdx11b green wave on top left/center of screen
First the blue didn't move, so I replaced both ic's and 6 resistors. I had a great picture for about 10 minutes, then the green dropped on the top left and top center creating a wave that won't converge. I've rechecked all my solder connections and they seem fine. What's happening?!?! (other than it's driving me to drink! lol)
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You will need to replace your two convergence I.C.s.They are two large
IC mounted on a large aluminum heat sink.Replace both,look for any
burned resistors near them,replace those if needed,and readjust your
convergence. Good Luck
Its likely that you did not find all the resistors that were damaged when the original failure occurred. Now you must re-replace the ICs and locate the other damaged resistors. Check all, including those you just replaced. Use a good ohm meter and be certain that all the resistors are gold band tolerant(5%) and of the exact resistance value and wattage.
Double images and colors are blurry .Blue,red and yellow wave coming up from the bottom of the screen on the lower left symptom is for busted convergence IC,you must replaced this IC in order that will works better again.STK 392-xxx ICs and it's associated resistor,this resistor automatically change value,can caused truoble even though you change the ICs.If you bring this to a service center they cost you $600 to $700,but if you buy the repair kit you can save more,don't wory it is very easy because there is intallation guide including in the repair kit. Feel free to ask whatever the result... click the link for sample picture guide step by step installation;
you have a failed IC resistor usually you can physically see the bad one because it burns out leaving you to guess what the value was. Hitachi offers a convergence fix kit which has 2 IC's and all approiate resistors.
I would change both ICs STK392-110 and also the 3.3ohm 1 watt resistors and the 1.8 ohm 1 watt you would need 2 of each resistor. Then your convergence would be new again. You can get replacement ICs and resistors at the following link with free shipping and free instalation instructions with pictures. http://servicemanuals.vstore.ca/
When A REAR PROJECTION TV has coloured outlines or a
3D image the Convergence Circuits most likely need attention.
Replacing the output amplifiers (located within the Convergence
IC's) allows the pictures to line up correctly, and no more color
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.
I had the same problem on my Hitachi rear projection TV 53FDX20B made in Mexico. The blue convergence problem. Blue focus had shifted and appeared like a blue ghost image. I followed the step by step intructions from the fixya site. First Replaced the two STK 392-110 ICs and turned on the tv. No change. Then I went looking for the bad resistor. There was one resistor RK50 (2.7 ohm, 1Watt capacity) which is attached not right close to the printed circuit board surface but was well raised up from the board. The bands on the resistor were a little discolored. I replaced that one and turned on the tv. The convergence problem was solved. Thanks for the step by step instrucitons on your site.