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Thank you Mick. Thats a new tip for me 73s GD Unni VU2TE wrote:

Thanks Dr Vaclav for the info will checkit. 73s GD [email protected]> wrote:

That's gonna be hard to do if its not powering up or takes a long time to do so. Mick SA4MDN

Hold bands Up/Down buttons while Powering on will start a relay cleaning session

I think there is a way to "exercise" the head power relay. Check the manual for details. 73 AA7EJ? Vaclav

It came on automatically. This problem was earlier also. It will not get switched on sometime. so keep the power supply on then after some time it functions as normal. Use to take short time for this.

There is a fuse mentioned in the service manual F 1001 Maybe worth a look with a multimeter

Dear Elwyn Thanks for the response mail. Nothing was disturbed on the set. Just switched off the rig the previous day and when I switched on nothing happened. opened the rig cover and checked the

So you've got the head plugged in properly, and the data cable is in the right place? You've not left a programming lead plugged in have you? And you've got 12v power going to the radio? Checked all

Dear all My 857D not getting switched on checked voltage up to PCB and tried after removing the brown jumper but no luck looks for help to locate the problem 73 s and regards VU2TE UNNI

The drift might have been some slight tension or dirt in the tuning knob tension assembly pulling the knob slightly. My radio mobile will change frequency with vibration of the car if the tension

UPDATE: The drift seems to have been a fluke. I've been monitoring several times, two hours at a time and the radio is rock solid. Even off overnight and watching for the first two hours after turn on

OK, will dust my oscilloscope and have a look at the FETs. And at the same time I will order some filters, seems to be good idea to change these :) Nice to have something to do during these dark times

Just was monitoring a couple QSOs on 7145.00 and noticed the display had changed to 7145.01. Thinking I may have bumped the Main dial I changed it back to .00. Several minutes later I noticed the

From what I can tell that is so, but the actual switching is convoluted and not at all clear to me. Download the service manual and take a look at the block diagram and read the technical discussion.

So these filters are covering the AM and SSB line, but not in use in the FM line?

The service manuals are available on line and a quick search will find them. Check the output SSB and if it is weak as well it is very likely that the SSB crystal filter is bad as it is used solely

Hi, may be the "famous" infamous filters https://dh1tw.de/replacing-yaesu-ft857-if-filters/ <https://dh1tw.de/replacing-yaesu-ft857-if-filters/>

Hi Just bought a used FT 857, and have discovered that the SSB receiver seems to have at least 40 dB attenuation or what ever it is. I can hardly hear any stations, and S-meter shows low value. If I

Thanks very much for the update. This kind of information can be very valuable.