MTX8000 keypad problem
Moderator: Queue Moderator
MTX8000 keypad problem
I have a MTX8000 B7 and the 15 key keypad doesn't work, but everything else does. Anyone know what a common problem is with these radios and the keypad not working? I don't think it is the flex cable because I ohmed it out and everything seemed to be ok with it, but it still could be. I looked at the board that the LCD display is mounted to, it is a NTN7154A and I noticed that there is a resistor missing at the spot R25. Is there supposed to be a resistor there? If so, what value? I can't find a schematic of the board online or in the service manual I have. Thanks for any help.
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N4KVE
- Posts: 1652
- Joined: Wed Apr 02, 2003 10:35 am
- What radios do you own?: APX XTS XTL TRBO 900MHZ
Re: MTX8000 keypad problem
I recently had that problem with a radio like that. Fixed it by cleaning the back of the buttons that contact the circuit board with alcohol on a Q tip. Worked like new after that. GARY N4KVE
Re: MTX8000 keypad problem
What kind of alcohol did you use? I am guessing not rubbing alcohol.
Re: MTX8000 keypad problem
Well guess what, you were right. I tried a different keypad and it worked!! Thank you for the suggestion. Now if I could get myself a hold of a Smartzone codeplug to force in it.
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N4KVE
- Posts: 1652
- Joined: Wed Apr 02, 2003 10:35 am
- What radios do you own?: APX XTS XTL TRBO 900MHZ
Re: MTX8000 keypad problem
I used Isopropyl alcohol from Target. Glad your radio works again. GARY N4KVEscanfan03 wrote:What kind of alcohol did you use? I am guessing not rubbing alcohol.