Mits VS-6071 Repairman removed a part and left never came back
My tv picture went out, still had sound. repairman removed a circuit board, left, never came back. the board is approximately 4 1/2 inches by 3 inches, has a silver protective cover over part of the board. imprinted on the silver cover is; VR7001, VR7002, LC7101, LC7102, on the reverse of the board, on a metal protective cover is the following TR-RC, TR-WC, GND, GND. could someone explain what this is and it's function, then remedies? thanks in advance. i tried to turn on the tv, it sounds like this, click-click, that's it.
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If this Tv is a model year 1996 or 1998, It is quite possible your vertical IC needs resoldered. It is located on the small signal board. This board [quite large anyway] is the board on the left. I don't know the location off hand. The IC has seven pins and located on a heatsink, It is a TDA series. Resolder any and all grounds you see. May as well get the Large Signal board [On the right] resoldered. The other problem would be the P I P board, a small board standing up, that can be removed and replaced. But try the earlier first. This is tedious, but will produce results.
YOU HAVE THE DREEDED CAPACITORS GOING OUT...AFTER A FEW YEARS-THE CAPS LOOSE THERE PURPOSE AND DEPENDING ON WHAT CIRCUIT THERE IN --YOU WILL SEE THE ASSOCIATED PROBLEM,,,EXAMPLE--COULD BE SOUND ,PICTURE (YOURS) OR VERTICAL(PICTURE CLOSING UP) ETC... YOU CAN HAVE CHECKED BY A REPAIRMAN BUUUUT ,MAY NOT BE COST EFFECTIVE ,,TUNICA
That sounds like a bad vertical circuit. Do you know how to use a meter and solder? If so we can troubleshoot otherwise you will need to call a repairman. A good repairman should run you $300-$500 to repair this. Let me know what you would like to do!
My brother had the same issue. I have the same set as well with this very issue. My brother had his fixed: repairman soldered the circuit board???? My brother could not tell me where on the circuit board or what circuit board???? IF there is anyone that knows about this....it would be helpful. I DO NOT WANT TO have someone else do what I can fix myself....besides by the time I pay a repairman I am 1/3 of the way or better to a new set anyway!!! Thanks a bunch - Pam
Let me preface what I'm about to suggest with my own comments. I've been a TV Technician for more than 20 years. That said, you don't fix it without calling repairman or you wouldn't have posted here.
In this unit there are common lytic caps that should be replaced without question. By location number and value they are:
Next it might be a good idea to ESR test other caps in the B+ line. ESR stands for (equivalent series resistance) It's a way of measuring the cap's effectiveness in a circuit. There are testers on the market for just under $200.00 for the backyard technician and they are a must.
Check the set for ring cracked solder joints. The symptom of leaving it off for awhile and then being able to get a picture suggests that it could be ring cracked in one or more areas, usually areas of high heat.
When all else fails there is calling the repairman. If you don't know how to find a reputable shop in your area I might suggest contacting NESDA (National Electronic Service Dealers Assn.) who can give you some reputable shop contacts in your area.
I have the identical model, purchased in early 2000. I had the same issue, and called Mitsubishi service. Turns out there is a known problem with the video power supply. Mine was under warranty when it was repaired (in 2002), but by now yours probably is not. I recall the repair guy did the fix with no parts, just a soldering iron.
If you're handy, you can probably get the details from MITS service and try the repair yourself. If not, I suggest the repairman route.