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Using vga 4 protron 3750 to laptop. laptop goes black, tv says invalid mode. problem started when vga cable was removed and new vga cable put on. still the same problem when first vga was put back on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Laptop to Samsung TV via VGA cable - unsuccessful !!

The problem is located in the CABLE, the SAMSUNG LCD need the higher quality cable than others vendors.
Please try it.

Posted on Jul 02, 2008

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SOURCE: philips 42" HDMI connection to VGA on laptop connection problems

why dont u just use the vga input and select vga from your input selection. it should work just fine. if not, email me back.

Posted on May 25, 2009

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SOURCE: VGA connection just reads "no signal" Brand new TV and VGA cable.

i have a 26" insignia lcd tv that i use as a montor uou musr set the screen resolution on your computer to 1024x768. if you use a higher resolution it will say no signal.so use your montor to set the resolution to 1024x768 then hook it to the vga and it should work. bob griggs

Posted on Jul 07, 2009

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SOURCE: PROTRON PLTV 3750 POWER SUPPLY BOARD REPAIR

if you look at the power supply board you will see an aluminum plate remove the four screws and 9 out of 10 times it is a diode on the board that has gone out. go to radio shack and for 83 cents you can buy one the same size. I personally have tried all the diodes that they sell and all of them that are the same size physically will work. I have three of these tv's and all of them were the same problem. I replaced the diode in each with one of each of the same physical size sold at radioshack and they have been working like new since.

Posted on Sep 20, 2009

budmrtn
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SOURCE: trying to hook up laptop with haier tv using vga

Dod you use HOTKEYS on the laptop to tell it to send the signal the VGA outlet of the laptop? The hotkeys function can be set to turn off the laptop screen and only have external monitor to be the only display or it can be set to have both of them on.

Posted on Nov 03, 2009

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1 Answer

Connection with VGA cable to pc says "invalid mode" Help plz!!


You PC video card resolution is too high for it to display, you need to set your PC video resolution to the native resolution of this TV.
1366 x 768 @ 60 Hz

If your TV goes out and it will, please read below:
Check the power supply; look for bad caps with leaking/bulging tops, check to see if you have standby +5vdc at the power supply connector, the front red indicator will not be on if you do not have this +5vdc standby voltage due to shorted out Q7 and ZD4.
http://s807.photobucket.com/albums/yy352/budm/Protron%20PLTV%203250/

Power supply: http://www.google.com/products?rlz=1T4GGIH_enUS282US283&q=pltv+3250+power+supply&um=1&ie=UTF-8&ei=9lIDTL7XO4fcM7HA-Ds&sa=X&oi=product_result_group&ct=title&resnum=1&ved=0CCgQrQQwAA

Oct 21, 2010 | Protron PLTV3250 32 in. LCD Television

1 Answer

Invalid mode is on a blue VGA input screen with laptop plugged in, why?


It is becuase your PC video resoliton is too high for this TV to display, max resolution for the PLTV3250 is 1366 x 768 @ 60 Hz.
Also watch out for this TV power supply to go out due to bad caps and it will take out the transistor and Diode with it.
http://s807.photobucket.com/albums/yy352/budm/Protron%20PLTV%203250/
http://en.wikipedia.org/wiki/Capacitor_plague

Jun 02, 2010 | Protron PLTV3250 32 in. LCD Television

1 Answer

Im trying to use my TV as my monitor for my pc?


What problem are you having? The connection should be fairly straight forward depending on your computer's video out. You can use a VGA cable, DVI to HDMI (check your graphics card manual for single link or dual link on the DVI side), or component video (even S-video). If you have HDMI out on the video card, use an HDMI cable. If you want to connect to the TV's speakers, you need at least an 3.5 mm audio cable (or 3.5 mm to RCA audio).

The DVI cable can be either a DVI to HDMI cable or DVI to DVI or HDMI to HDMI with a DVI to HDMI adapter at one or the other end.

I hope this helps.

Cindy Wells
(you will need to go through the input modes to find the signal. Some TVs need to be on (with no signal) before the computer is turned on.)

Feb 22, 2010 | Protron PLTV-3750 Television

1 Answer

I am getting a "no signal" on the blue screen on DTV mode of my Protron PLTV-3750 LCD. It has worked until I moved it to a different room. The signal is good on other tv. Anything I can do?


First make sure you have your cables connected securely, then try to move your antenna around and rescan your channels everytime you move the antenna.

Dec 01, 2009 | Protron PLTV-37 37 in. LCD Television

2 Answers

Akai 32LW7 _connection to Laptop


Hi,

I believe that you have connected it correctly since the Windows log-on is displayed. It may be that the Screen Resolution of your desktop is a bit high and therefore would have to be lowered to match the capacity of the Akai 32LW7. Pls try 1366 x 768 pixels or lower. You could also lower the laptop's screen refresh rate. Additionally, some laptops have to be toggled to activate external VGA by pressing Fn + F? keys to cycle through LCD, LCD + external, External only. The F? key would be the one with the monitor icon.

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.

Oct 31, 2008 | Televison & Video

1 Answer

VGA


Monitor outputs from PCs can be very fustrating. First of all, is the PC a laptop? If so most of them do not have a dual monitor capability for supporting an external monitor, or if they do it can be difficult to get it to use both monitors at the same time. Try updating the drivers for the video board. Most of them are sold with drivers that are outdated.

Dec 20, 2007 | Protron PLTV-32 Television

1 Answer

Using protron as a monitor with mac


Need to set resolution and refresh rate on the Mac before plugging in to the TV set - had this same problem with a WinVista machine. According to the documentation, the only supported resolutions are:

640x480 60Hz
800x600 56Hz
800x600 60Hz
1024x768 60Hz
1280x1024 60Hz
1280x768 60Hz
1366x768 60Hz

In all fairness, I cannot get the unit to run in 1366x768, though - get out of range. 1360x768 seems to work OK though. Only real problem with the VGA input is that regular text mode on a video card (more of an issue on Windows machines) does not work.

Nov 21, 2007 | Protron PLTV-32 Television

1 Answer

Connecting My Laptop to my T.V.


Try this test. Reduce the resolution on your laptop. Try 800x600. The boot screen is lower res than the desktop.

Nov 05, 2007 | Protron PLTV-26 26 in. HD-Ready LCD...

2 Answers

Protron PLTV-3750


I had the same problem. Do you have a cable box for digital TV? do you have a remote from the cable company? that is programmed to control the TV? get the cable company to unlock the sound control from it (a 3 number code) put your sound up to maximum if you can if you hear faint sound repeat above you should be able to hear the tv then then go to the sound settings and adjust as needed get the cable company to check the box in case it has been zapped by lightning good luck PS let me know if you want to junk it/sell it? they are excellent TVs

Aug 26, 2007 | Protron PLTV-32 Television

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