power cord needed

[intrepid7]

Looking for a ac power cord for Realistic TRC-455. Any help appreciated. A manual would be nice too. Thank you all so much.

 

[W8RMH]

You can download the manual off of the internet, just Google it.

 

[intrepid7]

did that

 

[fxdscon]

did that

Did you find this manual when you googled?

http://www.google.com/url?sa=t&rct=...I0hxmLVUzSHGIXhyx9XYUA&bvm=bv.119028448,d.cWw

 

[cmdrwill]

Power Requirements ........................ 13.8 V DC (12–16 Volts DC, Negative Ground)

So, there is NO AC power cord.

 

[blangell]

I think that's the wrong radio guys, he's looking for the 455 not the 445.

 

[intrepid7]

Radio has no power cord or manual. The cord is a 6 pin female

 

[Retroradio]

Nice radio. I have one as well. Good luck with the search as a quick internet search shows they seem to made of "unobtainimum". Now that I realize that I am going to keep an eye open locally for them just in case.
Good luck.

 

[iMONITOR]

This place might be able to help:

https://www.kenselectronics.com/lists/pwrcord.htm

 

[BBB007]

I have made my own in the past using two female molex pins on the end of a cut off extension cord. Then I shrink wrapped the molex pins to avoid a short and slip them over the pins in the radios jack.

Important: The two male pins on the radio that are further apart are for the 120VAC feed to the internal power supply (see the photo in this eBay add and zoom in on the power plug) You will see that its labeled 7A 125V. The other (4) pins are for using a DC 12V supply and are polarity dependent.

If you want to be sure, you can trace the leads to the power plug jack and confirm the pins go to the power supply transformer for 120 VAC or bypass it for 12VDC usage. Again observe and confirm proper polarity when using a 12VDC supply. The AC supply polarity doesn't matter.

AC Power Cord FOR Realistic TRC 455 Navaho AND Others | eBay

 

[intrepid7]

Thanks so much to all. I will call Ken's

 

[intrepid7]

I found a generic 2 prong plug. The radio lights normal but no talk or receive. Is it voltage specific or is there an internal problem? All the lights clock meters light but no meter action or hiss from speaker. The modulation light comes on when I speak but meters don't move and do not hear any sound. The cord I'm using should be ok if everything lights, right?

 

[Retroradio]

Not to be insulting but is the PA button accidentally pushed in.
Have you verifed with a different mic?

 

[intrepid7]

test

 

[intrepid7]

PA ok. Used 3 different mics from TRS-490 and TRS-55. Wonder if internal fuse is blown and tx/rx disabled but circuit allows lights to power up. No external fuse. Will need to pop the hood to find it. Thanks for all the help.

 

[BBB007]

I found a generic 2 prong plug.

That's what the eBay listing was trying to sell folks, not the actual factory plug, haha. His add was a bit misleading based on the photos unless you read the entire description.

Sounds like as you said, the internal fuse to the 12 VDC output on the power supply may be blown if you get lights and the 120 VAC clock works. The Modulation light coming on when you key the mic and nothing else working gives me pause though.

There is a bridge rectification circuit on the at power supply board with 4 diodes that may have gone south not allowing 12VDC to reach the main board. There is usually a potentiometer on the power supply board that may need to be rotated a few times to get the DC voltage back up. If the filter capacitor on the power supply board has dried up (common) and shorted it may be preventing 12VDC output also.

If you have a 12VDC supply you could try and power the radio on the other pins of the power jack. The AC powered mechanical clock would not work, but maybe the radio would come back to life.

 

[KC4RAF]

Generally, if the fuse or diode is bad,

then nothing will work in the transceiver. Haven't seen a schematic for that particular radio, so it's kind of hard to give a good suggestion as to the problem.

 

[intrepid7]

I have a dc power supply. Which pins for +/-??

 

[N0ZQR]

Power cord

Found a service manual in SAMS photo fact #205 page 77&78. Tried to copy and paste for you, but no luck!

Wil try again when I have time.

Ron

 

[intrepid7]

Thank you