Yaesu ft-50r HT getting very hot and not charging battery

Question edited for full 'make model (what it is)'
Question moved from Computers.

https://www.google.com/search?q=ft-270+disassembly

Looks like a Russian disassembly video

The walkie talkie is the heat sink. So on extended talk times, it will get hot. So will the battery. If you run full power, it is only worse. That said, some batteries will become abnormally hot with use. Usually OEM batteries are higher quality cells and seem to get a little less hot. Never buy the cheapest battery for a handheld radio. Some are pure junk.

Yaesu offers the MH-34B4B Speaker Mic or the MH-37A4B Earphone Mic for the FT50 HT.





Speaker Mic (Heavy / Standard Duty)




Earphone Mic (Light Duty)


Any ham radio store should be able to obtain these - if they are still in production / stock by Yaesu. Ham Radio Outlet aka "HRO" has stores nationwide and can ship direct.

I hope this helps!

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.

replace he keypad the carbon worn off

The rubber power button is impregnated with carbon and when pressed, it makes contact with two points on the printed circuit board, turning on the radio. This button eventually wears out and needs to be replaced, which is a rather easy process.

I've performed the operation four times - takes about 15 minutes. The button is available from Yaesu.

I also tried "repair kits" for these buttons which are supposed to replace the conductive surface. Both times, they failed again within a couple of weeks.

The upside is the new button is not as quite as tall as the original and requires depressing it below the surface of the case to switch, which prevents accidently turning off the radio.

Good luck, and 73

DE NøAWN

http://www.radiomods.co.nz/yaesu/yaesuft50.html

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

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