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aragorn224
Joined: 23 Apr 2015
Posts: 5
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 Posted: Thu Apr 23, 2015 5:15 pm Post subject: Toshiba 40RF350U Not loading/recognizing inputs |
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Hello,
Just recently, my 40rf350u will not load the inputs. I've tried plugging in an xbox in all 3 hdmi ports and I even tried a DVD player using the video component cables. Before I plug them in, the tv will turn on fine and it will even say "No Video Signal." The full screen works, I don't see any lines like other people have gotten. My biggest issue is that once I plug in the input cables, the "No Video Signal" message will go away, as if it recognizes the input, but the screen will stay completely black. The fact that the No Video Signal message goes away tells me that the TV can recognize that an input has been plugged in, but the screen then stays black and doesn't load the video.
Any suggestions? Has anyone else dealt with this and/or fixed it? Any help is appreciated! Thanks! |
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JTS1957
Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away
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| Posted: Thu Apr 23, 2015 9:00 pm Post subject: |
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See page 46 for how Input Selection works.
No Video Signal will appear randomly on the screen if no
signal is received in video input mode. |
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aragorn224
Joined: 23 Apr 2015
Posts: 5
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| Posted: Sat Apr 25, 2015 9:18 am Post subject: |
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| I'm confused by what you mean. I looked at page 46 and I didn't see anything on video input. |
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JTS1957
Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away
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aragorn224
Joined: 23 Apr 2015
Posts: 5
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| Posted: Sun Apr 26, 2015 2:09 pm Post subject: |
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| Oh, I think you may have misinterpreted my original post. I know exactly how to switch the input. That is not the issue. The issue is that when I switch the input to what is plugged in, it doesn't recognize that input. For example, If I plugged an xbox in to the HDMI 1 input and then I switch the TV to HDMI 1, the screen stays black. It doesn't load the input. It does this for all of the inputs (including component input). Does that make sense? |
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JTS1957
Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away
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| Posted: Sun Apr 26, 2015 2:36 pm Post subject: |
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| So with your DVD plugged into Video 1 and playing a movie - Video 1 Input selected (as confirmed with Recall button) - Screen is lit and has No Sound? or something else? |
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aragorn224
Joined: 23 Apr 2015
Posts: 5
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| Posted: Mon Apr 27, 2015 7:28 pm Post subject: |
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| That's correct - DVD plugged in to Video 1 and playing the movie as well as Video 1 input selected - the screen is lit but has no video showing or sound. The screen is just black. But, when I turn the DVD player off, the "No Video Signal" message bar pops up |
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JTS1957
Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away
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| Posted: Mon Apr 27, 2015 8:12 pm Post subject: |
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Service manual for this set requires a special Zeus program to view. Best I can obtain through a Field troubleshooting bulletin is that since the OSD is clear and both analog and digital sources are involved as well as both audio and video, I'd start by checking fuse devices on 'Main Power' (8 total) along with source voltages on 'Low B' board. Bad solder joints can and do occur and reseating connectors couldn't hurt.
Good luck. |
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aragorn224
Joined: 23 Apr 2015
Posts: 5
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| Posted: Tue Apr 28, 2015 3:46 pm Post subject: |
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| Okay. I'm not TV repair guy so I basically have no idea what I'm doing. when I open up the back, will I see fuses like fuses in a car? How do I reset the connectors? |
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JTS1957
Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away
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| Posted: Tue Apr 28, 2015 4:22 pm Post subject: |
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Bulletin doesn't show where on board they are located.
Best I can do: Location # / Amperage / circuit protected / Toshiba part #
Fuses - MAIN POWER PCB
F801 8A AC IN - 23144319
F802 5A MAIN PRI - 23144227
F889 5A AUD - 75005716
FE01 5A SUB PRI - 75005716
FE72 1A 40V - 75005714
FE73 5A 12V - 75005716
FE74 5A 6V - 75005716
FE75 5A 18V - 75005716
Reseat: Unplug one connector at a time, inspect, and plug back in if nothing abnormal observed. |
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