Question about Yaesu NABC NABC LMR NICD BATTERY FNB-V47 EQUIV. (NANBV47) 2-Way Radio

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My Yaseu FT-50R doesn't stay on. I have to remove

My Yaseu FT-50R doesn't stay on. I have to remove the battery, then re-insert it and sometimes this will turn the radio on. now it is simply dead, acts like it doesn't have power. battery voltage is 8.0 volts. thanks,
Larry N7LB

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  • 25 Answers

Darned resistive silicone contacts! This link will help you:http://www.sdarc.net/forum/printer_friendly_posts.asp?TID=828 There are kits available that "rebuild" the carbon conductive layer, should cleaning not help. It's like (car) rear defogger repair kit material. I haven't had long term success with the two part repair kits, myself. I didn't read the link myself, but cleaning with alcohol often works. If not, try acetone. If that doesn't work, a conductive kit or sticky aluminum tape may help. If cleaning doesn't work, and replacement is available from Yaesu, order it! Darned these silicone contact pads! Same pads as most remote controls.

Posted on Jul 16, 2009

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Posted on Jan 02, 2017

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Hope this helps, it it does please leave feedback and vote Thank You and Good Luck

Removal


  1. Disconnect battery cables, then remove battery and battery tray.
  2. Disconnect speedometer cable from transaxle.
  3. On models equipped with 1.8L/4-107 engines, remove intake manifold stay.
  4. On all models, disconnect starter wiring connections.
  5. Remove starter mounting bolts, then the starter.
Installation


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  2. Install starter and torque mounting bolts to 20-25 ft. lbs.
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I need a memory battery for a ft 50r both sides are sorderd the main board


I just had my FT-50R repaired due to a overheat issue with a reverse polarity diode. When I asked Yaesu to alao check my Yaesu for the memory battery I was told by their top technican that the radio does not have a memory battery in it. I hope this helps.

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Yaesu ft 50r


The FT-50R is an extended receive, but dual band (UHF & VHF) amateur transceiver. It is capable of transmitting between approximately 144Mhz - 148Mhz VHF and 430Mhz - 450Mhz UHF.

Typically, the radio will provide an audible warning whenever attempting to operate outside of its intended range(s). The manual has a section on maximizing battery life, and can be downloaded below:

http://www.radioamateur.eu/schemi/FT50_user.pdf

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OPERATORS MANUAL REQUIRED VIA FREE DOWNLOAD


dadoftoffee, hi. I found a manual listed but not sure what you mean by a euro version. Check this out and see if it's something you can use.
http://dw.ham.dmz.ro:8080/downloads/yaesu/ham.dmz.ro.ft-8800r.pdf

There's some mods and other info on the scanner here;
http://www.ham.dmz.ro/yaesu/ft-8800r.php
A little more technical info available here.
http://www.stevelarkins.freeuk.com/ft8800r_servicing.htm

I hope this helps you out in your search,, let us know. Mechanic

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Yaesu FT-50R battery drain


scotwho, I personally do not know the radio you are asking about, but I do have many years working with radios in troubleshooting. What I am guessing is, if the heatsink gets hot, then whatever is connected to the heatsink has shorted out. Two main parts come to mind here, and that's the audio chip, and the transmitter output final/chip. Possibly the main IC (brain) that controls most everything, but I doubt that. The radio needs to go to a repair shop that can troubleshoot the damage/ and find an answer as to why it occurred. A lot of times the factory's do not use heatsink compound when they assemble the units, and after an x amount of time the part/parts will fail. 10cents worth of heatsink compound can make a radio last a few years longer.
Probably not the answer you wanted but I hope this helps,, let us know. Mechanic

Feb 19, 2008 | Radio Communications

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