Question about ViewSonic N3251w 32 in. LCD HDTV

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TV input on the back of the unit broke cant connect coaxial cable

I need a new main board. the philips TV tuner connector is broke off where you connect the coaxial cable.

The philips TV tuner is soldiered to the main board, so I need the entire main board.

Thanks!

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If the PC board inside the tuner is not broken, the "F" connector can be replaced. This part is available and costs around $3-$5. Even if you have this part repalced by a shop, the cost will likely be less than replacing either the tuner or the entire main board.

Dan

Posted on Feb 18, 2009

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  • ViewSonic Master
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Try entering the model number on website below, they do worldwide delivery, and have one of the biggest database of replacements.


Appliance parts, electronics parts & more from PartStore.com

Posted on Feb 18, 2009

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1 Answer

Televison station won't scan


If you are receiving a "No Signal" error message, verify that:
  1. All of the cables physically connected to the TV and the input device are secure.
  2. The input device is turned on.
Your TV needs to scan for channels before it can show programming from an antenna, from cable TV when the cable comes directly from the wall (no cable box), or from a cable or satellite box connected to the TV with a coaxial (RF) cable. Do not scan for channels if you have a cable or satellite box connected using AV (Composite), Component, or HDMI cables. The box selects the channel, not the tuner inside your television. If you are not using the "TV" input, press the INPUT button on your remote until the correct input mode is selected.
To perform a channel scan using the coaxial input:
  1. Press the INPUT button on your remote to view your current input source. The TV (coaxial cable) input must be selected. This may appear as "TV," "ANT," or the channel and call letters of a station.
  2. If the TV input is not selected, press INPUT until the TV input mode is selected.
  3. Open the on-screen menu and select TV or Tuner option. (This varies by model.)
  4. Highlight Tuner Mode and select the correct option:
    • Antenna-over-the air signals from an antenna
    • Cable-direct from the wall cable TV, or a cable or satellite box connected to the TV with coaxial cable
  5. Select Auto Search or Auto Channel Scan. (This varies by model.)
  6. When the search reaches 100% complete, exit to the menu.
  7. Check the available channels:
    • Antenna or direct-from-wall cable-Press the Channel Up and Channel Down buttons on your VIZIO TV remote to view the available channels.
    • Cable or satellite box- Will return only one channel. Use the cable or satellite remote's Channel Up and Channel Down buttons.
If this does not resolve the issue, power cycle the TV and then re-run the channel scan:
  1. Turn off the TV.
  2. Unplug the TV from the electrical outlet.
  3. While the TV is unplugged from the wall, press and hold the Power button on the TV for 30 seconds.
  4. Release the power button.
  5. Plug the TV back into the electrical outlet.
  6. Turn on the TV.
Note: There is also an option to reset the TV to the factory default settings. This option is in either the SETUP or SYSTEM section of the on-screen menu. The option may be "Reset all settings", "System Reset," or "Reset & Admin." Consult your TV's user manual for the location and steps for resetting your model.
  1. Remove the coaxial cable from the DTV/TV connector on the back of your television and perform a channel scan to clear the existing channels. See the procedure above. This should not find any channels.
  2. Re-attach the coaxial cable to the DTV/TV connector and perform a new channel scan.
This video shows troubleshooting steps to use when a "No signal" message appears.

Jun 25, 2014 | RCA 46 46LA45RQ LCD TV

1 Answer

The coaxial connector broke off of my Apex LD3288T tv. I removed the back panel and I can not see how to re-connect the coaxial connector. Does anyone know how to repair this?


Its part of the tuner in most cases and not real easy to replace for a novice---sometimes the tuner will have to be replaced as when it broke off it may have damaged the circuit board inside the tuner.

there is a possible way around this: With a box of any kind being used that has the Audio/video jacks for output of signal you run cables from them to a set of matching inputs on the rear of set, leave set on that input and change channels with the box--bypass the tuner completely.

If the tuner and board it is only sold as a complete unit it will be expensive to repair.

Dec 22, 2012 | Televison & Video

1 Answer

Hello, my 25" Magnovox (#mt2501c)


Tv fell off about 3 feets or more?Yes,turn on the tv see if u getting any power to the unit?Might have broken main PCB board too.If unit still have power,check see if tv get statics screen have colors shaded in red or mutiples colors,mean the tv CRT(tv tube) yoke is dead and damages scrambles radiation.Or the tv getting power but have high pitch sqeeling noises or rattles noises,tv have the CRT-(tv tube) is crack by the neck or broken totally.CRT have damages problems or dead tv is worthless,beacause of CRT(tv tube) is dead,not fixable even that antena connector input is replaced.

Feb 17, 2011 | Philips Magnavox MT2501C 25" TV

2 Answers

Coaxial hookup broke off. Can i use an s cable through vcr? need instructions.


If your Sharp television has RCA jacks, you may use them through your VCR. Your VCR would have to have a tuner and then you may use this as a means for getting a signal. Newer VCRs and DVD players generally do not have a tuner. Thanks for asking!

Jul 22, 2010 | Sharp 27N-S300 TV

1 Answer

Where can i find a cable for my HDTV (the kind that get screwed in)cables? its a Mitsubishi WT-46805


Hello sounds like the coaxial connector has come off or broken off the tuner, You can repair this problem using the old connector that broke off by taking out the tuner and resoldering the center pin back to the tuner board (provided the small tuner board is not cracked) and the out side of the connector to the tuner housing for ground. If you are just using or referring to a common coaxial cable to purchase, you can get these from everywhere Radio shack, Fry's etc. Also ur local cable company. If all else fails use the rca output jacks from the cable box if u have one and connect it to video input one on the back of the television, make sure you change you television input to video one if u decide to do it this way.

Oct 24, 2009 | Mitsubishi WT-46805 46" Rear Projection...

2 Answers

The cable plug broke off the back of TV. I took off the back of TV and I'm not sure what to do.


If this model has a/v inputs you could use them and if you're on cable (direct cable not cable box) you could use a vcr to change channels - or you could remove the tuner and resolder the "cable plug" (RF connector) if it didn't crack the tuner circuit board when it came off.

Oct 16, 2009 | Zenith A25A11D 25" TV

1 Answer

Input cable piece broke off akai pt5499hd


The coaxial input can be soldered back in. You will need a new one however. Sometimes the internals in the tuner (where coaxial goes) may be damaged when coaxial connection breaks out. If that is the case a tech may charge more money. But just to replace the connection should be relatively inexpensive.

Apr 23, 2009 | Televison & Video

2 Answers

Broken coax connection on back of unit


If you are comfortable doing some small repair work, you might be able to fix this with stuff you have laying around.

All you need is:
1 - 8" piece of coaxial cable with male connector on one end
1 - set of RCA cables (Red/White/Yellow)
1 - coaxial coupler
2 - small wire nuts

electrical tape

Take the back housing off of your TV. You may have to unscrew the small nut holding the threaded connector to the TV. This threaded connector should connect to the motherboard with a male RCA prong that should be soldered to the component on the motherboard. You will need to carefully cut
& remove the old soldering & wiggle the connector off. This is the hardest part, but it WILL come off with a little trying.

Now get your coax cable and strip off about 2" of the black outside housing ONLY. Your solid copper` interior cable should be protected by a small plastic coating which is covered in braided wire. You'll need to be careful not to cut the braiding off. Untangle the braiding down to where your cut stops and try and get it all on one side of the cable so you can twist it all together and make a nice wire. Now strip about an inch off of your interior plastic sheathing to reveal the small solid copper wire on the very inside.

Get your RCA cable and cut about 6" off of the one yellow side. Follow the same process above to get a braided sheathing wire and a solid copper wire. Attach this yellow wire to the coaxial cable by twisting the two braided wires together and the two solid copper wires together. Use your wire nuts & electrical tape to secure your connections making sure none of the wires can touch each other.

Connect the yellow cable's male prong into the component on the motherboard and attach your coaxial coupler to the male end of your coaxial cable. If you saved the small nut from earlier, you can re-attach this new coupler to the housing on your TV. Screw your housing back on the TV and you should be good to go.
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Jan 19, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

Broke the piece where the cable wire goes in...what's it called?


Unfortunately, that coax connector  is almost certainly crimped onto a cable inside.  You might want to pull off the back panel to see if that internal cable is screwed onto another jack on the chassis. If so, you can disconnect that end and substitute another cable, they come in several different lengths and are not critical. Any electronics store will have them.
If it isn't equipped with a connector inside, you will need to have someone unsolder the defective cable and install a new one.  

Dec 21, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Coaxial outlet broke off


I assume that you pulled the F connector out of the back of the TV. In most Sharps, the F connector is attached directly to the tuner, which is the rectangular silver metal box soldered to the main PC board. Did you buy a replacement F connector or the entire tuner? Either way, the tuner must be unsoldered from the main board and the new F connector is soldered into the old tuner or the new tuner is soldered in its place. If you do not have experience soldering PC boards then let a qualified tech handle it for you.

Jul 02, 2007 | Sharp 25R-S100 25" TV

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