Bow in the green tube, what is a reasonable price for repair
I have a Sony KP-51WS500. Recently the green occasionally projects is a 'bow' or horizontal hourglass. The bottom curves up and the top curves down. It seems to be doing it more and more. Usually turning it off and on will solve the issue. Now it seems to be stuck.
I don't beleive there is any adjustment for this. From reading other posts, it sounds like it is a resistor or chip on a board that needs to be replaced or re-soldered. What causes this, does the soldering fail from temperature fatigue?
I have opened it up and have tried some adjustements, without zapping my self, but I don't have a clue what I'm doing. I dont think I made things any worse.
What is a fair price for repairs of this sort?
Oh, my good friend has the same TV in a 57". He has the same problem, but it seems like it is more than just the green tube. Is this just a cronic problem with these Sony TVs?
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Re: Bow in the green tube, what is a reasonable price for...
Your problem as well as your freinds tv is nota cronic problem with only Sony TVs but with every rear tube projection set ever made. The convergence ICs mostly go bad and yes, sometimes, a cold solder connection on the main convergence board can cause these problems. The IC's should be replaced as a pair as that takes care of problems your going to have down the road with the other colors going funky. A normal repair , depending on the area your in should run about 250.00 up to, but no more then 400 bucks. Good Luck
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The green picture tube has an internal short. Happened a lot with that model. The tubes are no longer availible. But a reputable company called Video Display will rebuild the tube completely. But the tube must be pulled and shipped to them. Most repair shops would charge around $400 to $500 for the complete job.
This is a convergence problem that can be as simple as poor solder connections on the convergence ICs or defecive ICs. If you can solder you can repair this yourself, Let me know if you wish to attempt the repair and I'll provide additional details and instructions.
The blue picture tube has gone bad. Sadly they are no longer availible for that unit. But the blue tube assembly can be sent back to a company called Video Display. They rebuild the tube for a very reasonable price. The hitch is that it takes a professional tv tech to reinstall and align the rebuilt tube. Most respectable shops will do this work but the repair is spendy. Usually around $450 to $500 or more.
Check out CONVERGENCE GALLERY
. If you see your symptoms you have a problem in your convergence amplifier circuits. Typical Sony Convergence repair requires disassembly for replacement of 2 ICs, sometimes a fuse or 2, then TV is like new.
It is much more complicated than changing batteries on your remote. Many consumers try unsuccessfully to do a convergence repair. I recommend finding someone competent to do it for a reasonable price. Typical repair shop charges may be from $400 to $650.
If you are in the Calgary area, call me. More reasonable rates.
You probably need to replace the convergence IC's and do a good cleaning of the internal mirror and lens. This repair will involve soldering and un-soldering on the printed circuit board. If you have no printed circuit board repair experience, play it safe, and have a pro do this repair for you as that price sounds reasonable for this type of repair. Good luck!
I hate to be the bearer of bad news, but you have a shorted red picture tube.It is not at all uncommon on sony rear projection. The gun shorts and the set identifies the problem and goes into shutdown. Usually there are diagonal lines in the picture before it shuts down. this is an unfortunate problem because this set delivers a great picture. The dealer cost of the tube is around $200. When the repair is complete your're probably looking at $400-$600.
The only problem is that the green tube and the blue tube also have chance of having the same problem. It'a tough call . But from my experience , I have replaced the green tube and
had the blue tube goe within a year. Scrivitron