20 Most Recent Kenwood PB-34M, ,TH-22AT,TH-42AT,TH-79A, 9.6v 1000mAh NiMh Pk 2-Way Radio Questions & Answers

I solved this problem once by opening the unit and adding a rubber spacer that exerts pressure on the ribbon cable. I cut the spacer myself from a neoprene-like spongy material. This fix worked for approximately 5 years. The problem is slowly re-emerging and I might have to do it again soon.

TH-22AT/ TH-42AT QUICK START 1.Press VFO 2.Enter Frequency By a)Using the dial knob b)Or entering the last five digits of frequency 3.If Tone Is Required a)Press T/CT b)Press and hold F for more than one second c)Press T/CT d)Using dial knob select tone frequency e)Press T/CT 4.Memory Entry a)Press and hold F for more than one second b)Select memory number using dial knob c)Press MR to store 5.Memory Recall a)Press MR b)Select memory number using dial knob

its illegal

Users Manual (download if you don't have it) TX I NHIBIT You can inhibit the transmission to prevent unauthorized individuals from transmitting, or to eliminate accidental transmissions while carrying the transceiver. 1 Press [MENU]. 2 Turn the Tuning control to select Menu No. 25 (TXI). 3 Press [MENU]. 4 Turn the Tuning control to select "ON". 5 Press [MENU] to store the setting or [PTT] to cancel. • "TX INH" appears and an error beep sounds if the transceiver tries to transmit while TX Inhibit is ON

You should be able to enter the menus and change the freq display mode away from "alpha".

Hello Ying,I'm not very familiar with your particular radio, however, help is at hand by trying the following: join yahoo group SPECIFIC to your radio Make/Model, the people there are professionals in the field, and would give great info and advice, plus you can download manuals, diagrams, software, etc.,....I hope this helps you.Regards,Peter

Hi.

It looks like the key panel is defective and must be replaced. Standing to your description the receiver is working. Here the biggest third party part seller. Call them and find out if the panel listed in parts includes the key pad.

Kenwood has no parts for old model. If Partstore does not have the spare, try Kenwood, or look for second hand parts on Ebay.

Regards.

Ginko.

Go to qrz.net, qth.com or just type the radio model on search engine : "kenhood th 22at diagram" will bring you a lot of places.

You could have a defective screen or a defective LCD driver, either way you have to replace it.
I 've replaced LCD screens before they typically are the entire front half of the radio inside wise. Probably going to cost a few to do it.

Happened to me too. It takes some disassembling!!!! Between the screen and the underlying circuit board is a rubber strip with conductive material throughout which provides ''ground' for the display. This rubber wears out over time, but the quick fix is to turn it a quarter after cleaning and treating the contact surface with 'contact spray'( sparsely!!).

Job requires steady hand and pincers.

Hi there,

As you say's that your radio frequency locked, but it dosen't look like that.
It seems like there is some problem in the band reciver unit..

post further comment for more help.
Thanks

RTFM Page 29

Press [BAND] + POWER ON to toggle Channel Display

Gerard - PE1OUD

TRY TO RESET THE CPU.

http://www.radiomods.co.nz/kenwood/kenwoodth22.html

TH-79A Kenwood HT and with the power off, hold down the MR button and the PTT switch, and while holding both of these turn on the power. The HT will come up in the remote control mode with the display indication "RC" on one band and the normal display on the other band.
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To get the HT out of the "RC" mode just repeat the MR+PTT+Poweron sequence

REPLACE THE PTT SWITCH, AND ADJUST THE MODULATION TRIMMER.

There are several reasons for this, but one can be the flex that joins the display with the circuitry, carefully check if this is not broken or in this process or dirt.