Question about Toshiba TheaterWide 46HM94 46" Rear Projection HDTV

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Toshiba 46HM94 This TV have good sound,OSD ok, Menu shows up but I cannot get a picture from any of the inputs or tuners, I changed the back AV board, but the problem still exists. Thanking you in advance, Godfrey Burrows Last Chance Electronics

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  • Teriya Jun 03, 2008

    Several problems occurred after connecting a Nintendo video game. Initial problems involved response to the cable and TV remote control and response to TV panel controls. After pressing the reset button, and unplugging the TV in an attempt to reset the TV, the problems deteriorated to no picture. The current problem is a green and white looking test pattern, and no picture. Audio comes through OK, but without volume bars. I thought the problem was the DLP lamp, but a replacement bulb didn't make a difference.

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The lamp has to be lit for the OSD to be present. the video processor is likely where the problem lies. I would suggest one of the following circuits SD Ram Circuit, Scaler input and or Capture circuittry and quite possibly the light engine itself all though the light engine would be very last on the list.

Posted on Apr 10, 2008

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Closed caption


Manual Library you should find all you need here:
http://www.techlore.com/group/2/list_downloads
Just word search the manual for closed caption


if you can find this in your TV options I cut and pasted it from the manual, see the line with Closed caption settings see if yours matches, sorry about the formatting this furm post will not cut and paste properlyeach of the #'s below corosponds to the bold headings.

OptionSetting/Basic2US1/BasicW/Basic+2US2/Core2US3/Basic+2US4
AAVL 1 1 1 1 1 Auto Volume Level via Sound Menu
ACS 0 0 0 1 0 Auto Convergence
AOUT 1 1 1 1 1 Audio Out
APC 1 1 1 1 1 Auto Picture Control
AV3 1 1 1 1 1 Side AV Source
AV5 0 1 1 1 1 (yes this is blank)
BNUM 1 1 1 1 1 Numerics Displayed in Menus
C169 1 1 NA 0 NA Compress 16:9 mode available
CBFL 1 1 1 1 1 Comb Filter Present
CCAP 1 1 1 1 1 Closed Caption
CFMU NA NA 1 1 1 Comb Filter Menu Item

I also found this with the word search but it makes no sense to me sorry...

The HDR2002 has two microprocessors. The Microprocessor, 7001, on the SSB monitors the Keyboard and the Remote sensor during standby. This IC controls the Tuner, Video switching on the SSB, generates the consumer OSD. Pin 5 of 7001 monitors the Keyboard for a voltage change to generate a command. The Front Detect line on Pin 6 monitors the AV inputs on the Side Jack panel. If a problem develops, the Front Detect will go Low, preventing 7001 from receiving any commands. The Power Fail input on Pin 79 goes High if the set looses power while the set is On. Composite Video is fed to Pin 31 for Closed Caption decoding. Horizontal and Vertical sync on Pins 53 and 55 synchronize the OSD and Closed Captions display signals, which are output on Pins 46, 47, and 48. Fast Blanking for the OSD is output on Pin 52 There are three I2C busses on 7001. The Bus on Pins 78, 80, and 97 communicates with the MemoryIC 7012. This IC stores Customer setup information, Option codes, and Error codes. I2C busses, Sand F communicate with the Tuner on the PIP panel, and the ICs on the SSB. The S bus also controlsthe Tuner on the SSM and the Audio and Video switching on the SSM. Data lines on Pins 16 and 17communicate with the Microprocessor on the ACS module.

below is my general post about this TV, I'm not sure if any of its info will help but there are links to other info on this TV set... Good luck

Great reference link that I posted pictures on, check out page 3
http://www.techlore.com/forum/thread/16736/Magnavox-51MP392H-17-51-quot--TV-has-double-vision/

Where I got all my parts that worked:
Suburban Electronics http://www.suburban-elect.com/

Manual Library you should find all you need here:
http://www.techlore.com/group/2/list_downloads


BTW if you don’t plan on trying this and are going to throw out the TV, I still need a IC convergence board for a 51MP392H/17 TV I'm fixing, I'm willing to pay S/H and buy your IC board that’s not been tampered with. Edwinkraus@hotmail.com

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ronniezay,
Don't replace the convergence board, but take it in and have the convergence amps replaced. That unit takes two stk392-110 IC's and are fairly inexpensive compared to replacing the entire module. In fact, ask to have them replaced with a more reliable stk392-150's...
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