I was told my 3 year old tv needs has a "bad yoke, picture tube and power supply problems" estimated repair $800. Is this something I can fix myself and if so can I get drawings, how-to and a list of where I can obtain the parts?
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Hi, White dots are due to bad DMD chip and qualified tv tech can replace required DMD chip in this tv to fix the picture issue. Please contact nearest Samsung service center or local tv repair shop for repair estimate. Thanks.
If this has only started to leak recently, get an estimate from a local servicer for a coolant replacement for that tube. The coolant is corrosive and needs to be cleanedup ASAP from any circuit board that it has touched before there is damage. This is NOT a DIY repair. Expect a repair cost in the $300 range for parts and labor. If the set had a good picture prior to this, it may be worth the repair. This is your call. Do not delay however, as any delay will increase the likelyhood that there will be more damage that needs repair.
try unplugging the 3 wire plugs for the convergence yokes and try powering up the set. if it comes on you will need convergence ICs if it doesnt you will need a deflection board. let me know what you discover as I can help you with either problem
Hi Chelon alot of Mitsubishi tv's around the time the model number you are stating where built have a small PCB on the yoke of the picture tubes, connections on these boards (one of them) break down so the set loses one of the scaning circuits (vertical or horiz) the circuitry senses this failure and shuts off the picture (some models the whole set) this is to protect the picture tubes, try wigglin the heavy cable going to each of the 3 tubes (unpluged from wall socket) then plug it in and turn it on. Once the set is up, carfully wiggle each of the cables goin to the yokes until the screen flickers or flashes now you know which one is bad repair it is a bit of task but lets see it you get this far first.
CHECK YOUR RED ,GREEN AND BLUE CRT'S THERE MAY BE A SMALL CRACK ON THEM.MAKE SURE TO TAKE THE YOKE OFF AND INSPECT THE ENTIRE TUBE IF THER IS A CRACK IT IS CAUSING YOUR TV TO GO INTO SAFE MODE. ALSO CHECK THAT NONE OF THE COOLING FLUID HAS DRAINED OUT OF THE TUBES ON TO THE CRT BOARDS IF SO REPLACE THE BOARDS AND CRT IF CRACKED. YOU CAN FIND ALL THE PARTS AT PARTSTORE.COM HOPE THIS HELPS.