Is there a problem with the Kenwood ts-850?

Kenwood TS-850 can develop an ALC problem. The ALC voltage becomes unstable and swings up and down, and so does the TX output. The RX works fine, but the TX becomes unusable. You can watch this videoto experience the problem.

Is it possible to repair a ts850s radio?

One of the biggest issues with TS850S repair is finding parts. I am sorry to say that getting new parts is almost impossible now and likely the only way you are going to fix your radio is to find a donor radio that you can swap modules with.

Where is the diode on the Kenwood ts-850 radio?

DO NOT TRANSMIT OUT OF BAND, THIS WILL JEAPORDIZE YOUR LICENSE, AND HAVE THE FCC, AND/OR INTERNATIONÁL AUTHORITIES KNOCKING AT YOUR DOOR!!! The All-band transmit modificatéon requires the removal and re- location of a diode on the the digital board which is located behind the front panel.

Where does the ALC voltage come from on a Kenwood ts-850?

You can watch this videoto experience the problem. The ALC voltage is created by the DC-DC board (X59-1100-00), which is a tiny daughter-board sitting on top of the RF unit (X44-3120-00). The DC-DC board creates a negative, constant ALC voltage (-6 V).

Are there any problems with the Kenwood TS-850S?

Here you have some pictures and comments of several repairs done to different TS-850S. As it is a rig I repair frequently, I will add more information as soon as I work on them. Hope it helps! Problem#1: NONWORKING DISPLAY One of the failures I have found in several units is a faulty display.

Who is the author of the TS 850 instruction manual?

TS-850 Instruction Manual Title TS-850 Instruction Manual Author Kenwood Created Date 20011015232703Z