Its so easy to make these sort of mistakes on modern radio's. I was given an 857D that was apparently deaf on HF. After some research I found that the AGC was switched off. Turned it back on and all was fine. Nice explanation on the firmware upgrade process Peter. Have a nice weekend.
The newer radios have so many nested menus and settings, it can be confusing. Peter, thanks for the Saturday morning video drop and have a peaceful weekend.
Hi Peter trust you are well peter videos are never boring we learn something know matter how small it is technology is always amazing there is some clever people out there.
991(A) has a known problem with attenuator, it often get damaged if turned on and the second TRX near-by it active. To small (power rating) resistors. Then the radio is deaf when att is enabled, but working completely fine with preamps engaged. You checked only preamps. Maybe you should also check if attenuator is working correctly.
No moment boring for me, because that is the real life. I often get radios with minor to no faults. Sometimes loose connectors, wrong settings or just false conclusions while operating the TRX. So that is once again a lovely video with a happy ending, especially the bill is quite low. Gut gemacht Peter, danke sehr! 73 de Olaf
Peter all your videos are interesting . Every video is like another piece of the puzzle towards understanding the hobby. Thanks for clear and in depth explanation of things. 73.
Peter, November is such a sad month in the year. We all choke back tears for the past stupid things (you know what I mean maybe?) Buy let us all raise a glass to the future, to good health, prosperity, your great vids and warm friendship between us all once again. Oh..... let's not forget the Big Show......CHRISTMAS!! Mum says you could be her present under the tree anytime!!! Lol!!!! I think she has taken a BIG fancy to you maybe????!!! Lol!!! 73's My Friend and Take Care. Love from Barbara (mum) Nina & Wayne. 👍👍👍👍👍👍🫡🫡🫡🫡🫡🫡❤️❤️❤️❤️❤️❤️😊😊😊😊😊😊😊😊
Is this another case of R.T.F.M. ?? I agree you should check your firmware of new radio's. It can fix problems that you do not want to run into later. I also have received radio for repair where the customer simply did not see something. It is best to have customer show you the problem but it is not always that easy. Good video as always.
these problems were not existing when processors and other devices were mask programmed in the factory. Users used the same configuration for 30-40 years without problems or glitches.
These are notorious for resistor frontend burn when in presence of very strong signal at the antenna, using AMP1 or 2 actually bypass that resistor and make it alive again. I would check if the frontend resistor is still OK.
You know that the R1005 is a 10 Watt resistor which is only switched in the signal path for 12 dB attenuation. That means that this path is not active with IPO ...
Peter maybe the fault described below is not the fault you were looking at? I am talking about the rig seems to be deaf with IPO on due to blown R1005 150 ohm on USA version rig. On Ft991 USA version R1005 is 150 ohm 1/10th watt smd resistor. If R1005 is blown and the IPO is selected the rig appears deaf. Info for consideration below It can be seen that the Attenuator circuit is formed with a 150Ω and 68Ω resistor voltage divider that is comprised of R1005 and R1012. When the Attenuator is disabled, the 150Ω R1005 is shorted by relay contacts and the 68Ω R1012 is removed from the circuit by relay contacts. The failure mode is due to the 150ohm R1005 opening up and breaking the signal path. @@TRXLab
They are never boring Peter, every day is for learning. Love your vids many thanks.
Its so easy to make these sort of mistakes on modern radio's. I was given an 857D that was apparently deaf on HF. After some research I found that the AGC was switched off. Turned it back on and all was fine. Nice explanation on the firmware upgrade process Peter. Have a nice weekend.
Yeah, that happens...
My husband loves❤❤❤ your videos. Please make lots more😂, and hello from Rockford Illinois ❤.
The newer radios have so many nested menus and settings, it can be confusing. Peter, thanks for the Saturday morning video drop and have a peaceful weekend.
Hi Peter trust you are well peter videos are never boring we learn something know matter how small it is technology is always amazing there is some clever people out there.
Thank you!
Like a few others have said the 991/A front end is easily damaged. Rig works with IPO 1 or 2 but deaf without IPO selected.
991(A) has a known problem with attenuator, it often get damaged if turned on and the second TRX near-by it active. To small (power rating) resistors. Then the radio is deaf when att is enabled, but working completely fine with preamps engaged. You checked only preamps. Maybe you should also check if attenuator is working correctly.
The complete front end has been tested and is fine.
No moment boring for me, because that is the real life. I often get radios with minor to no faults. Sometimes loose connectors, wrong settings or just false conclusions while operating the TRX. So that is once again a lovely video with a happy ending, especially the bill is quite low. Gut gemacht Peter, danke sehr! 73 de Olaf
Ja teilweise ist das anstrengend..Danke fürs Vorbeischauen! Take care.
That's how it goes sometimes. Still happy to see the video.
Peter all your videos are interesting . Every video is like another piece of the puzzle towards understanding the hobby. Thanks for clear and in depth explanation of things. 73.
Thank you!
Peter, November is such a sad month in the year. We all choke back tears for the past stupid things (you know what I mean maybe?) Buy let us all raise a glass to the future, to good health, prosperity, your great vids and warm friendship between us all once again. Oh..... let's not forget the Big Show......CHRISTMAS!!
Mum says you could be her present under the tree anytime!!! Lol!!!! I think she has taken a BIG fancy to you maybe????!!! Lol!!!
73's My Friend and Take Care.
Love from Barbara (mum) Nina & Wayne.
👍👍👍👍👍👍🫡🫡🫡🫡🫡🫡❤️❤️❤️❤️❤️❤️😊😊😊😊😊😊😊😊
Dear, yes fully agree, hope that things turn to a better future for all. Greetings to all of you especially to Barbara lol. 73's and take care.
Check in IPO mode with higher signal level input. It may be deaf in IPO mode (No amp1 or 2) only.
Yes R1005 if blown will make the rig sound dead with IPO on please check R1005
Is this another case of R.T.F.M. ?? I agree you should check your firmware of new radio's. It can fix problems that you do not want to run into later. I also have received radio for repair where the customer simply did not see something. It is best to have customer show you the problem but it is not always that easy. Good video as always.
Yeah, and / or an issue with the set-up at home?
@@TRXLab I agree.
these problems were not existing when processors and other devices were mask programmed in the factory. Users used the same configuration for 30-40 years without problems or glitches.
well yes and no...we often see issues in the home set up as well...
These are notorious for resistor frontend burn when in presence of very strong signal at the antenna, using AMP1 or 2 actually bypass that resistor and make it alive again. I would check if the frontend resistor is still OK.
Complete front end has been tested fine..
old ham new radio...
lol
Peter please check R1005 if blown will make the rig sound dead with IPO on please check R1005
You know that the R1005 is a 10 Watt resistor which is only switched in the signal path for 12 dB attenuation. That means that this path is not active with IPO ...
Peter maybe the fault described below is not the fault you were looking at?
I am talking about the rig seems to be deaf with IPO on due to blown R1005 150 ohm on USA version rig.
On Ft991 USA version R1005 is 150 ohm 1/10th watt smd resistor.
If R1005 is blown and the IPO is selected the rig appears deaf.
Info for consideration below
It can be seen that the Attenuator circuit is formed with a 150Ω and 68Ω resistor voltage divider that is comprised of R1005 and R1012. When the Attenuator is disabled, the 150Ω R1005 is shorted by relay contacts and the 68Ω R1012 is removed from the circuit by relay contacts. The failure mode is due to the 150ohm R1005 opening up and breaking the signal path.
@@TRXLab
Pozdrawiam 🇵🇱
in your oinion. is 991 deaf on 11meters (CB) because not a amateur band?
No that is not the problem..
would like to send you for repair 2x kenwood ts940 please leave a message regards peter from the Netherlands.
Thank you for these videos Peter, you always have something new to teach us. 73 LB5JG Asle
this was no problem for Peter ... 73s de DL6RDE / AA1KD, Charlie