Question about Televison & Video
Without a model number of the set you own, it makes it difficult to suggest a remedy since Mitsubishi made a substantial number of projection tv's over the years. Model components change from one to another and from one year to the next. In addition, since this is more of a clarification post, what kind of raster is it, snowy, plain or muted due to of lack of signal? Can you input a video source (DVD, VCR, Camcorder) and have it show on the screen? When you say you checked the tuner, what did you check?
Posted on Oct 16, 2008
Let us try eliminating the video process by connecting an external video source such as a DVD player in any of the Audio/Video INputs. Doing so would confirm the tuner (and/or perhaps the logic) circuitry.
Most TV tuners would use a 33 volts reference voltage for the VCO to shift frequencies. The 33 is normally regulated by a dropping resistor and zener combo. Pls check this as they could be the issue. It may be to your advantage if you could post the brand and model of the PTV or at least the tuner block.
This is of course assuming that you are familiar with electronic circuitry and components, use of a DVM and safe practices involve when performing voltage checks on a live unit.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards. Thank you for using FixYa.
Posted on Oct 16, 2008
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Sep 09, 2013 | Toshiba 40RV525U 40 in. LCD TV
Feb 09, 2008 | Televison & Video
Jul 25, 2010 | Mitsubishi WS-55809 55" Rear Projection...
Sep 06, 2009 | Televison & Video
May 24, 2008 | Mitsubishi VS-45605 50" Rear Projection...
Dec 13, 2007 | Mitsubishi WS-55809 55" Rear Projection...
Oct 11, 2007 | Televison & Video
Oct 03, 2007 | Mitsubishi WS-65869 65" Rear Projection...
Jun 19, 2018 | LG Televison & Video
67 people viewed this question
Usually answered in minutes!