Sound loss On channel 3 (Cox Cable provider) the sound cuts out completely for 1-4 seconds every 30 seconds or so. It only occurs on Channel 3 and on some days it is worse than others.

change the sound volume in channels settings /avc and try

DONT USE the remote that came with your TV

use the buttons on the box to change the channel. did the channel change?

usually when someone only has one channel its because they are changing the tv channel not the cable box channel

think of it like this:
the TV is a monitor and should always be on the same channel (3, 4, hdmi, or whatever) its actually the box that tunes and the tv always stays on the same channel.

so if you change the tv channel you are no longer watching the output of the cable box.

USE the remote supplied by your cable provider

The tuner on that set is fubar. Can you use the cable box video/audio outputs for your set in lieu of the rf output?

Reboot your cable box first by unplugging the power for about 30 seconds

Step 1: Check that TV or Stereo is not muted

Make sure that your TV or Stereo has not beed muted and that the volume is turned up loud enough to hear.

Step 2: Reset Receiver

If the issue is only on ONE receiver, unplug the DISH receiver for 10 seconds and plug back in.

Please note: It may take up to 5 minutes for the reset process to be completed.

Step 3: Check Receiver-to-TV Configuration

Check that the wiring between your DISH receiver and your TV is configured properly.

Step 4: Secure Receiver-to-TV Connections

Check that the connections between your DISH receiver, your TV, and any component(s) (VCR, DVD Player, etc.) in between are secure.

TV SETTING
1. Press the MENU button.
2. Use or button to select the TV setting menu, then press or button.
3. Use or button to select the Channel no. setting and use the or button
to change from AIR (over-the-air broadcasts) to CABLE (cable/satellite broadcasts).
4. Use or button to select the Tuning mode and use the or button.
5. Use or button to select the Auto tune and press or button to
confirm the selection. The unit will immediately search through all possible TV
channels and store those channels with signals in memory. After this is complete,
the unit will switch to the first channel found.
6. To exit the MAIN MENU and return to the normal screen, press the EXIT button.
Note : In DVD mode, this option is not available.
Remarks:
1. Channel no. : 2-69 channel for Air mode, 1-125 channel for Cable mode.
2. Tuning mode : Air or Cable mode are available.
3. Auto tune : Searches for usable stations and stores them in memory.
4. Skip : ON - Skip weak channels. OFF - No channel skip.
5. Fine tune : The frequency changes to allow fine tuning.
6. AFC : Auto frequency control.
7. MTS : Select the Mono sound/Stereo sound/Secondary Audio Program (SAP).
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TV SETUP
MTS (Multi-channel Television Sound) SETTING
This feature allows reception of sound other than the main audio for the program.
1. Press the MENU button.
2. Use or button to select the TV setting menu, then press or button.
3. Use or button to select MTS menu, and press or button to select the
options (Mono, Stereo, SAP)
4. To exit the MAIN MENU and return to the normal screen, press the EXIT button
on remote control.
Note:
• MTS only operates while in TV mode.
• The SAP (Secondary Audio Programs) feature allows a TV station to broadcast
other information, which could be audio in another language.
RESTORE SETTING
If you reset the TV to the factory settings, all your present settings on picture &
sound will be erased and replaced by the factory’s default settings. However, picture
setting in PC mode and parental setting will not be erased.

sond slike bad tv almost is your power strip grounded well bets one is monster clean power clean up older homes power so dirty in usa cuses flat screens to die out elery if u have up down voltage in house also cheak hd antenna whos your cable from charter or dish

you can try changing the assigned channel.you should have to put the second T V on a certain channel like channel 72 or 68 or something like that.on the main reveiver you should go into the menu and poke around in the setting until you see a REMOTE ADDRESS option walk through the steps and change the channel that the second TV receives its picture on, you should shoot for channel 62-72.also make sure the hisense is set to a cable input.you can go into the menu on the hisense and go to your settings and change this .it will be on CABLE or ANTENNA.try switching those around.also did you have sound before coming out of the coax output on the hisense? if your not sure then plug a vcr into and make sure the TV is working with different equipment.GOOD LUCK!

First check set for problems by:This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. Self-diagnosis error 2-3 indicating deflection failure. Check for shorted or leaky Q5A37 part # 260P818050 located on PCB-Main. If found defective replace only the transistor instead of the Main PCB.

have the cable company check your cable.thier signals are not comming into your house properly it is weak.good luck.