Title: Re: #118 Yaesu FT-2800M No Power On Repair
Post by: Jnagle81 on August 22, 2020, 03:03:04 PM
I just aquired a yaesu ft-5100 and it has low output on vfh <1w. Do you have any videos on this unit or have any resources for it. Thanks
Title: Re: #118 Yaesu FT-2800M No Power On Repair
Post by: The Radio Shop on August 22, 2020, 07:08:00 PM
That sounds like the RF final amplifier transistor is out. This is a RF module. Sometimes the ceramic substrate cracks. You can remove it, take the plastic case off and see if you can see a crack.
Have a look at this page for an example. https://www.rftechnology.com.au/downloads/EB0405.pdf