My Yaesu FT-50R will drain a battery in just a matter of a couple of hours. I think there must be a short because the heatsink gets hot (even when the unit is off). I purchased the unit new in either '98 or '99. I chenged the knob out a few years back, and that has been the only other problem. I hope you can help.
I also have a Yaesu FT-50R with the battery drain and overheat problem. I took it to my technician and in my case the issue was with a reverse polarity diode. My technican checked all the other comonents and found that this diode was shorted and causing the radio to drain the batteries and causing the radio to get warm. Once he replaced the diode the radio stopped draining batteries and no longer gets quite warm.
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Re: 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
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The cheapest way to repair your Yaesu, is to find a friend who is an amateur radio operator, these people know radios, and work on radios as a matter of course as their hobby, otherwise it's off to a radio workshop you go, and be prepared to part with some cash.
There are no freebies with quality branded radios, only cheapies, if you know the right people.
I hope this answers your query, and by the way, I'm in Australia, you never mentioned your location.
It's difficult to open the Vertex packs without ruining them. FNB27 is widely available on eBay or you can get them from manufacturers such as W&W in Hicksville NY online. I don't know if anyone has made them in Lithium Ion yet.
Darned resistive silicone contacts! This link will help you:http://www.sdarc.net/forum/printer_friendly_posts.asp?TID=828There 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.
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.
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.