Question about Toshiba 55H70 55" Rear Projection Television
Do you get a flashing led if so how many times?
this is a post from someone else:
Thought I would report my finding with this set. Maybe someone else is experiencing the same problem.
The set would turn on with no picture. No high voltage - no raster. By turning up the volume, you can hear some noise in the speakers. This set has many fuses and they all checked out ok.
I located some schematics on the net for the previous generation set - 40H80/56H80. I could not find any site with the 50H82 schematics without paying. The 40H80 seemed to match the 50H82 fairly closely. I checked the horizontal output transistor with a scope and found no signal. I traced the signal back to a board on the signal schematic called the DPC module. No HOT signal was being generated by this module. Per the schematic, I checked the voltage supply pins at this module and found everything ok except pin 6 which is supposed to be +12V. I traced this back to the power supply connector and found voltage (pin3 of 8 on BB30). Since I got the set for free and I was feeling risky, I shorted the +12V at the connector to pin 6 on the DPC. I got a small spark and the set shutoff, but I could hear static which indicated that the HOT briefly same on. I shorted out the connection again and turned the set on. This time is powered up and came back to life. I've run the set for a couple days so far and it appears to be working great.
I may have gotten very lucky, or I may be shorting out something that is not supposed to be shorted. I would really appreciate it if someone who has the real 50H82 schematic could check the connection between DPC pin 6 and the power supply connector BB30. If this is a real connection, I have to assume that the trace burned out somewhere. It vias up and down all over the place and is very hard to follow.
Posted on Dec 11, 2007
Tips for a great answer:
Dec 16, 2010 | Toshiba Projection Televisions
Nov 02, 2009 | Toshiba Projection Televisions
Sep 26, 2009 | Toshiba 62HMX84 62" Rear Projection HDTV
May 21, 2009 | Samsung Projection Televisions
Mar 30, 2009 | Toshiba 57H82 57" Rear Projection...
Jan 27, 2009 | Toshiba 50HX81 50" Rear Projection...
Jan 21, 2009 | Toshiba TP50H95 50" Rear Projection...
Dec 21, 2008 | Mitsubishi WD-62531 Projection Television
Sep 17, 2008 | Toshiba 46H84 46" Rear Projection...
Jul 27, 2014 | Toshiba 55H70 55" Rear Projection...
83 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: