Mitsubishi vs-580r red tube works for a while then starts flashin
Hello i have a mitsubishi vs-580r tv ...picture is good for a while then the red tube will start to flash off and on...stays off for a while then comes back on and stays on for a while...i was thinking that the tube may be going out...any suggestion would be appreciated thanks...
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hi I would say blue and red depending how old is your tv you should check first with screen controls located near the right side speaker behind the front panel there are blue red green master screen control along with focus control just turn the controls clockwise and see what happens if the red and blue do not light up at all the tubes are not involve good luck
Hello. in VS models there is no such a thing as a lamp. Your TV have 3 CRT tubes (picture tubes) each of them dedicated to Green, Red and Blue part of image accordingly. It is not the part that you can easy replace by yourself and it cost new around $600 and just to refurbish existing one around $320. But you have to refurbish all three of them at the same time. So we are talking about $1000 just for parts, not to mention enormous effort to align everything back together. If you have bad CRT in your TV - I would advise just to trash it and invest in new one. Lamp is replaceable in DLP projection Mitsubishi TV and it is next generation of TV"s. Model number starts with: "WD". If you still insist on part number - I need to know what color of CRT you need - they have different part numbers. Best regards Russ.
The set is old and the picture tubes are probably weak. you can pop off the front grill, remove the protective panel to expose the picture tube sockets. On the sockets are controls to increase or decrease the intensity of the colors. The red is on the left ,green center and blue right. Go to a B&W picture or turn the color off, then adjust for the best grey screen.
The part you are describing is actually the red picture tube, not a lamp. The tube will come dry and you will need to disassemble the lens assembly on the old tube, drain the coolant (antifreeze), reassemble the parts and seal on the new picture tube, fill with fresh coolant, install the new tube, reconnect all wires including the dangerous high voltage lead, then realign the yoke and entire convergence circuits. This is not something that should be attempted by anyone without experience. If you try it yourself and the seal is not working perfectly, the coolant will drip down on your main boards and the set will be ruined. If you slip while lowering the new tube in the chassis there is a good chance you will crack the tube's neck, and that tube will be useless too.
This symptom seems to be a vertical Sweep fault cause what happens is theres a protection circuit in this set that activates when it sees theres no verticle sweep, it shuts off the picture on the set so that the tubes dont get lines burnt in the middle and become damaged. If you know your way around a TV set then you could locate the vertical output IC and resolder all its pins first as well as anything else in that circuit that looks like a cold solder connection. Then i9f it still does the same thing I would just replace the verticle output IC as well as the B+ supply capacitor off the flyback xformer for the sweep dirived power supply. Now if your not knowlegeable about these HI VOLTAGE circuits my advice would be do not attempt the repair yourself as you could get hurt and /or cause more problems with the set as there are no tubes in this set to test except the picture tubes. Contact Mits. at this #800-332-2119 or look in your owners manual for a contact #. Good Luck.