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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Help to repair Convergence board on PIONEER SD-P6081 & STK4277-SL
My Pioneer SDP 6081 tv recently developed a convergence problem. The
convergence in the center seems ok, and can be adjusted, but the outter edges are "fish eyed" (warped) and user control adjustments do not move the beams. Let me also say that I'm no technician or anything like that- I'm a guy who know's how to solder, and have been around electronics pretty much my whole life. I'm no advanced, but I'm no dummy either I called a repair man out, and he explained the convergence board must be rebuilt at a cost of $350 + $40 service call fee (which I had to pay already). I did a few google searches and found that the STK4279-SL chip under the main heatsink is usually the culprit of outter edge convergence issues. Pioneer will sell me a newly rebuilt replacement convergence board for $253.00 + s/h, or the chip (STK4279-SL-STK4277-SL) alone for $42 + s/h. As I understand it from Pioneer, the STK4277SL chip (which is whats on this board), is no longer available and has been replaced by the STK4279-SL. Can I replace the (older?) STK4277-SL which is whats on my board, with a (newer?) STK4279-SL chip? Will everything still fit? All the leads and pinouts the same? Heatsink will fit, etc? Assuming I can do this, will I need a scope or any other extreme piece of equipment to realign the heads/guns of the picture? I've gone into the service menu and written down all the RH/RV and BH/BV positions from the 0-9 keys (pressing each of them several times to get all the stored values). I'm guess at worse I will have to re-enter these values and re-align my convergence and I should be good to go? Any detailed advice that could be given would be greatly appreciated......... THANK YOU. |
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Yes it will work. Check resistors for open or value change. Should only need
minor touch up adjustment. "Te" wrote in message news:bqQqd.587220$mD.47646@attbi_s02... My Pioneer SDP 6081 tv recently developed a convergence problem. The convergence in the center seems ok, and can be adjusted, but the outter edges are "fish eyed" (warped) and user control adjustments do not move the beams. Let me also say that I'm no technician or anything like that- I'm a guy who know's how to solder, and have been around electronics pretty much my whole life. I'm no advanced, but I'm no dummy either I called a repair man out, and he explained the convergence board must be rebuilt at a cost of $350 + $40 service call fee (which I had to pay already). I did a few google searches and found that the STK4279-SL chip under the main heatsink is usually the culprit of outter edge convergence issues. Pioneer will sell me a newly rebuilt replacement convergence board for $253.00 + s/h, or the chip (STK4279-SL-STK4277-SL) alone for $42 + s/h. As I understand it from Pioneer, the STK4277SL chip (which is whats on this board), is no longer available and has been replaced by the STK4279-SL. Can I replace the (older?) STK4277-SL which is whats on my board, with a (newer?) STK4279-SL chip? Will everything still fit? All the leads and pinouts the same? Heatsink will fit, etc? Assuming I can do this, will I need a scope or any other extreme piece of equipment to realign the heads/guns of the picture? I've gone into the service menu and written down all the RH/RV and BH/BV positions from the 0-9 keys (pressing each of them several times to get all the stored values). I'm guess at worse I will have to re-enter these values and re-align my convergence and I should be good to go? Any detailed advice that could be given would be greatly appreciated......... THANK YOU. |
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