Question about Digi Channel Master/tal to Analog Converter/CM-7000

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I lost all the tv channels on channel master cm-7000 model and do not understand how to get them back?

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First look at the indicator lamp on the front left side.
If it is:
off - check the power cord is plugged into a working outlet.
Amber - the unit is in standby, press the on button (left most), it should turn green
Green - the unit is in operate mode, check the antenna and cable connection.
Red - when power is applied, it will be red for up to 30 seconds. If it remains red, the unit is defective. This is a common problem due to several capacitors on the power supply and logic board that have gone bad. The unit is repairable by replacing these capacitors.

Posted on Nov 14, 2011

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1 Answer

How to properly connect the channel Master antenna tuner to my TV so that I can connect an antenna to the tuner. I have the CM-7001. I'm connecting through the HDMI port on the tuner to the HDMI port


Confusing question! The CM-7001 is meant to be used for displays or monitors that have no means of connecting an antenna and don't have a built-in tuner. HDMI to HDMI would be the correct way and make sure you select the proper HDMI port. Or use the other video and audio cable connections.

Sep 03, 2014 | Channel Master CM-7001 ATSC Antenna and...

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Cannot get NBC on my channel master


Your signal strenght is too weak either try moving the antenna to a different location. If that doesn't work then you may need an outside antenna. The link below will tell you what stations are available at your address and what type of antenna is necessary.. TV Fool

Feb 14, 2014 | Channel Master CM-4046HD MODERNtenna...

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I moved and cant figure out how to hook my 4030 channel master antenna up again. I have a converter box and hd toshiba tv


INSTALLATION

Channel Master by PCT indoor antennas are designed to provide optimum reception of

UHF / VHF and FM signals. These antennas have 75 ohm outputs, which allow simple,

hassle-free connections to today's newer TV sets that have 75 ohm F type connector

inputs.

Simply attach one end of the supplied 6' cable with F connectors to the output of the

antenna (Fig.1). Attach the other end of the cable to the input of the TV set or VCR

(Fig. 2). Some adjustment of the antenna might be necessary for optimum viewing.

Model CM-4030 includes a built-in amplifier and separate power supply.

1. Follow the same steps as above for antenna to TV / VCR hookup. Note : Model

CM-4030 also allows for two set / VCR hookups with its unique dual output feature.

2. Insert the power injector into the back of the antenna (Fig. 3). Plug in the power
transformer to the closest electrical outlet (Fig. 4).


Google 4030 Channel Master Instruction Sheet for the PDF File with the diagram.







Fig 2a
Fig 3 Fig 4

prohibido por ley.

TV

Fig 1 VCR

Fig 2

Fig 2a
Fig 3 Fig 4

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1 Answer

Channel Master Digital Analog Converter Box CM-7000


E1 is a 100 uF 16 VDC capacitor. I have been repairing these units lately and have experienced some of the same symptoms (LED goes red but doesn't transition to green after 30 seconds like it should). I have been able to repair some of these units. Make sure the power supply is working properly before spending significant time on the D2A board. The power supply is responsible for supplying 12, 5, and 3.3 VDC to the D2A board. A defective PS will measure 14.5 instead of 12, 6 instead of 5, and 2.9 instead of 3.3. The AC ripple should be about 5 mV on the 3.3 and the 5 volt supplies when loaded. The 12 volt can be as high as 50 mV on a good PS. The culprits are C12 (1000uf) and C10 (470 uf) which are the filter capacitors for the 3.3 and 5V outputs respectively. C12, the capacitor for the 3.3 V output is especially critical because it is used to feed the voltage regulator and overvoltage shutdown circuit. D7 is a hot part and can also fail sometimes. I have repaired 50% of my units just by changing these capacitors. I still have units where the D2A board is bad with a known good power supply. If anyone has more info on the D2A (like a schematic) please pass it along

Feb 25, 2012 | Televison & Video

2 Answers

My Channel Master CM-7000 D2A TV Converter box is stuck with Red Light ONLY. Does not respond to any button I press. There is no picture


This is a common problem. There are several capacitors on the power supply and logic board that are bad. Replacement of these parts has restore all units that I have looked at.

On the power supply I would replace at a minimum:
C14 - 4.7ufd 50v UPW1H4R7MDD
C4 - 1ufd 50v UPW1H010MDD
C8 - 100ufd 25v UHE1E101MED
C10 - 470ufd 16v UHE1C471MPD
C12 - 1000ufd 10v UHE1A102MPD

There are 4 others in the supply that were not grossly bad.
C1 - 22ufd 400v EEU-EE2G220
C7 - 220ufd 25v UHE1E221MPD
C11 - Same as C10
C13 - Same as C10

Logic board:
E5 - 33uf 35v EEU-FM1A471
E6 - Same as E5

Part Numbers of replacement caps are Nichicon or Panasonic.

Note: Caps on the logic board are extremely hard to replace due to the internal ground plane.

Contact me if this is beyond your skills for possible repair.

Nov 06, 2011 | Digi Channel Master/tal to Analog...

1 Answer

I have a Channel Master cm-7000. It won't turn on. The red light is on it won't turn on with the remote or by pushing the on button. I tried unpluging it and pluging it back in and all that happens...


This is a common problem. There are several capacitors on the power supply and logic board that are bad. Replacement of these parts has restore all units that I have looked at.

On the power supply I would replace at a minimum:
C14 - 4.7ufd 50v UPW1H4R7MDD
C4 - 1ufd 50v UPW1H010MDD
C8 - 100ufd 25v UHE1E101MED
C10 - 470ufd 16v UHE1C471MPD
C12 - 1000ufd 10v UHE1A102MPD

There are 4 others in the supply that were not grossly bad.
C1 - 22ufd 400v EEU-EE2G220
C7 - 220ufd 25v UHE1E221MPD
C11 - Same as C10
C13 - Same as C10

Logic board:
E5 - 33uf 35v EEU-FM1A471
E6 - Same as E5

Part Numbers of replacement caps are Nichicon or Panasonic.

Note: Caps on the logic board are extremely hard to replace due to the internal ground plane.

Contact me if this is beyond your skills for possible repair.

Sep 07, 2011 | Digi Channel Master/tal to Analog...

1 Answer

I have channel Master 700 by PCT that the red light will not turn to organge then to green.. It stays red, no matter what I do?


This is a common problem. There are several capacitors on the power supply and logic board that are bad. Replacement of these parts has restore all units that I have looked at.
On the power supply I would replace at a minimum:
C14 - 4.7ufd 50v UPW1H4R7MDD
C4 - 1ufd 50v UPW1H010MDD
C8 - 100ufd 25v UHE1E101MED
C10 - 470ufd 16v UHE1C471MPD
C12 - 1000ufd 10v UHE1A102MPD

There are 4 others in the supply that were not grossly bad.
C1 - 22ufd 400v EEU-EE2G220
C7 - 220ufd 25v UHE1E221MPD
C11 - Same as C10
C13 - Same as C10

Logic board:
E5 - 33uf 35v EEU-FM1A471
E6 - Same as E5

Part Numbers of replacement caps are Nichicon or Panasonic.

Note: Caps on the logic board are extremely hard to replace due to the internal ground plane.

Contact me if this is beyond your skills for possible repair.

Apr 25, 2011 | Digi Channel Master/tal to Analog...

1 Answer

Code for Channel Master CM-7000 Digital TV converter box ? I need code number for Sony TV


If you do the setting up using device codes scan correctly (page 25 in the user guide ) it worked with my sony bravia KDL-32L5000.

Oct 26, 2010 | Channel Master (9537) Remote Control

2 Answers

My CM7000 has a red light on, and won't boot up


Most likely bad capacitors in the power supply. I have fixed several including my own. See avsforum CECB thread for more info

Mar 30, 2010 | Digi Channel Master/tal to Analog...

1 Answer

Analog to Digital TV Converter-Which Brand is BEST for the Money?


my first question is how many channels can you receive now, that are clear with no snow, without a dtv box hooked up. if any channels have snowy pictures now when tuned in at best reception, you more than likely will not pick then up with the dtv box. the only option in my opinion that some may prefer from one model to another would be the program guide on some units only show whats on now and next, whereas some units may have a 5 to 7 day program guide. there is one unit out that has a noticeable hum on the audio if turned to a high volume. Im not familiar with the dtt901, but from what you have looked at so far, you shouldnt go wrong with purchasing any one of them. If you can only get 1 or 2 channels now, i wouldnt invest a fortune in a dtv box, unless its your only means of viewing television, and watch alot of tv.

Mar 01, 2009 | Televison & Video

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