I've replaced the convergence chips because I was told that would fix everything. But I still have a concave screen and there are arcs on the top and bottom of the screen. Is there something else I need to replace? Please help???
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Re: Arcs at the Top and Bottom of the screen!
You will find small 1/2 or 1watt resistors close to the ic's, you must measure them and they must be exact ohms. I believe you'll find a couple open or have changed in value, I hope the new Ic's haven't been fatigued. That should fix your problem.
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Hello; You have a failed convergence board. JVC does NOT give me ANY info. They won't even talk to me on the phone! On some sets, there is a digital convergence board and a power convergence board that actually drives the convergence yokes on each of the 3 CRT's. If you have both, either one is bad and probably expensive. I recommend people Don't buy JVC products due to their bad reputation. John
Sounds like a problem in the vertical sweep circuit. Check voltages to your convergence ICs. If they are not to spec then look for bad fuses and capacitors on the power board. These will throw off the DC voltage to the convergence chips causing the bow effect. I've had a single bad pico fuse ($1) cause this symptom.
HI, this is a failed convergence chip that is located on the convergence board. it will need to be replace ASAP. you can just replace the chip or , you can order a new board.
Replacing the chip can be a rough job if you don't have tech experience. if you are a fluid tech and you can solder and know your way around a circuit board, just replacing the chip will cost less. if you are not an experienced TV tech, i recommend a service call to the nearest TV tech to replace the convergence board.
The convergence chips in your tv have gone out. They control the three picture tubes and align them so that they create one picture on your screen. I recomend having a qualified technican replace them and realign you convergence. Thanks.
You have a convergence problem. Here are some of the most common symptoms.
Screen looks 3D One or more colors can't be adjusted when when using the convergence menu. Screen is bowed in but stationary.
Solution: You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit inlcludes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. Its an easy fix.
most like tes thats all your going to have to replace + the silicon as if you dont thet wil not last as long as they should. Also you may have blow fuseable resistors next to the ICs make sure you check them as well.