Change channel, lose picture. power off/on, picture appears

Hello Friend,
I am Nitin Khatri from India. 2 reason for this problem.
1. HDD Status OK but not showing recording due to Date changed to old year,month,day, please check camera date and search recording.
2. HDD Status fail, so you need to do following things:-
Your CCTV DVR HDD is not working or got stuck while recording footage, now you need to reset your HDD.
Note:- As you mentioned you replace Computer HDD into DVR, it means your have installed Normal HDD in CCTV DVR which is a bad idea, your CCTV technician should inform you that time when he installed that normal HDD in DVR. CCTV DVR HDD called Surveillance HDD which RPM rate is higher and can work well for recording footage buy a Western Digital Surveillance HDD and Install into your CCTV DVR for future safety.

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hi!!!!
try to change the cable!!!
may that helpS :)

You would need to ask the broadcaster of the stations that question.

memory eeprom corrupted

Hello,
This will require you opening the back cover of the television to test some component with the use of an ohmmeter.
This may be a slight drift - like someone is messing with the fine tuning
or such a substantial change in tuning frequency that the channels go by
as though you are surfing.

Possible causes depend on tuner type:

1. Quartz tuner (10 button direct access digital synthesizer) - For a
slight drift, a component is probably changing value, possibly the
crystal in the reference oscillator. For gross changes - flipping
through channels - it is more likely to be a digital control problem -
the microcontroller is misdirecting the synthesizer to change frequency.

2. Varactor tuner (buttons but not direct channel access) - If only a
single pushbutton selection is the problem, the the varactor tuning diode
for that button is probably changing capacitance. If all channels in
a band (Vl, Vh, U) are having a problem, it is more likely to be a
drifting D/A or faulty AFT (Automatic Fine Tuning) circuit or power supply.

3. Turret or switch tuner (Knobs) - A component like a capacitor is changing
value.

You will have to get in there with a heat gun or cold spray and track it down
the old fashioned way. At least, the problem is almost certainly localized
to the tuner box (and possibly the controller if applicable).

As noted, gradual slight changes in tuning are likely due to frequency
determining components drifting.

Uncontrolled channel surfing is probably a logic problem. For the
quartz tuner, this could still be marginal connections causing the
microprocessor to misdirect the synthesizer to change channels.

For the latter case, particularly, the cause may still be bad connections
resulting in loss of channel memory and/or erratic behavior.
Take care...

I have the same set, same problem with one of my MOTOROLA boxes, but not with another. I have a SONY TV that works fine with this new MOTO box, but the new VIZIO does not. The audio is coming through the HDMI cable just fine, and the fact that it works when you cycle power on your TV means it's the SYNC between the TV and the BOX. I have the identical problem and am taking back the MOTO box for another one. I spoke to VIZIO for about 45 minutes trying different things. They think it's the MOTOROLA box, COX (my cable company) thinks it's this particular box, who knows.

Hi:
Make sure under your audio options you are in stereo mode and not it SAP, (Special Aided Programing).

Hello, it sounds like your inverter board is goin out on the set, when you change channels if you notice on almost any TV the screen goes dark and the new channel appears, it sounds like you are not getting enough power out of the inverter board to power up the backlight enough to come on. This is why the sound remains because everything else works fine and the sound is connected to the main board.

Make sure u have signal on both tuners on the DVR ( check it in your set-up screen). both tuners should have the same siganl strength. Directv's DVRs, if installed correctly, give u the option of recording one channel and watch another, or recording 2 seperate channels( 2 tuners). If you are recording 2 seperate shows and u change the channel one of your recordings will cancel .

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