Excellent troubleshooting sequence Stefan. Really like watching your videos, and want to thank you for making them and sharing your thought process and expertise! I have one of these and some day will have to open it and check it. 73 😊
Thanks for the video Stefan. Has happened to me many times! Go looking for the fifth leg of a cat (a Spanish saying that means that you look for the most complicated thing that may be happening not looking for the easiest of solutions) and the solution was a simple one. I would have done same. So you are good my friend. I have one of these (D version) and will now check on the speaker but I am sure it does not have that pad cause I replaced the speaker years ago (bough the radio used and had broken speaker cone and also screen was striped damaged). Ordered both parts and is now working really well. A hug from El Salvador and thanks for sharing your knowledge. I learn a lot from you. 73 Rob, YS1RS.
Exactly!!! Thought the same when I heard the saying first time. My grand father used to say “Era simple pero por andar buscando las cinco patas al gato, no viste la solución…. Así se aprende!”. He said that to me many times. Agree the fifth one is the tail 😂
These TRXs are like modern cars - 50% of the problems (at least) are caused by the software. Operators: keep your fingers off these maintenance menues if you do not know what you are doing. Tnx Stefan for sharing your experiences.
Hello Stefan, Again, I nice video! You are just lucky that there were no short-circuits around the processor between power supply pins and other pins .. 😀 73's and thanks for your interesting videos. Stephane (aus dem Elsass)
My newly acquired FT-857D has foam around the speaker. It's brittle and made a mess when I took the top cover off. Got it cheap because it has the display issue. Already have an Arduino taking over for it and displaying frequency, mode and s-meter on it. Still need the crappy one for the menu.
DL7MAJ STEFAN YOU ARE GOOD AT RESTORING VINTAGE SHORTWAVE RECEIVERS AND ALIGNMENT OF VINTAGE SHORTWAVE RECEIVERS AND RESTORING HAM TRANSCEIVERS MY FRIEND
Very good approach to fault finding. These boxes with the alignment menus wich are "hidden" to not be operated by the user... I think you approached it correctly. Thanks for the video.
Something was making me wonder about the software settings early on mostly because my Icom transceiver has many of them and I've had one or two change over the years with no reason I could determine (bit-flip?). I about fell out of my chair laughing when you said RTFM as I've said that many times to folks on the job and hams as well! ;-) TNX for sharing Stefan! 73 - Dino KLØS
“Read the @&@& manual” …. Easier said than done. I’ve found that I’m less inclined to read manuals as I progress in age, so it’s only natural. Thanks again for an interesting video.
Hi Stefan, I followed with interest this video as I’ve worked on 2 857 I acquired for myself, both needing repair. I also worked on my 817. I do agree at the beginning the software alignment Is tricky. I took me some time to get it right. Regarding the conductive pad I can tell you that it was NOT on the right place. Factory position is on the side of the speaker, not were you found it. When you close the cover it goes pressing on the TMP connector at the center of the board (by memory the rx path). Someone went in and just made mistakes there as well as on the bloody alignment menu!. Best wishes and to the next video! 73 Diego
Tnx dr Diego, i can follow your argumentation regarding this crazy pad. The history of this TRX is unknown and there are many genius in the world....hi.
RTFM - good advice, banging your head against the wall - not so good. A piece of conductive foam stuck to the speaker pressing on the microprocessor that is removed when testing would be so easy to miss, especially the conductive bit. I believe you found this problem faster by using standard troubleshooting methods than you would have by scrolling through all of those menus looking at numbers. I say "Well done, sir" Regards, David
QsTechService1 I too have this scope and really need the extra bandwidth/generator, but (maybe I’m dumb) but just couldn’t find (to me) a straight forward set of instructions/SW for me to confidently do it. Very worried of bricking it and being retired too a long time to afford it. I hate to ask this on Stefan’s channel but could you point me to where and how you did Thank you and Stefan & 73! 😊
@SpinStar1956 Check out Dave Jones EVBlog Forms Basically you're installing custom Firmware Unlocking all features Also turning the scope into 500 MHz Just make sure to back up your Stock bin file Is first before flashing Let me know how it goes
DL7MAJ STEFAN I HAVE A ZENITH TRANS OCEANIC TRANSISTOR SHORTWAVE RECEIVER I WANT TO RESTORE IT LET ME NO WARE I CAN GET RUSSIAN GERMANIUM TRANSISTORS ?
Xcellent troubleshooting performed!!!!!
Excellent troubleshooting sequence Stefan.
Really like watching your videos, and want to thank you for making them and sharing your thought process and expertise!
I have one of these and some day will have to open it and check it.
73 😊
Thanks
Thanks for the video Stefan. Has happened to me many times! Go looking for the fifth leg of a cat (a Spanish saying that means that you look for the most complicated thing that may be happening not looking for the easiest of solutions) and the solution was a simple one. I would have done same. So you are good my friend. I have one of these (D version) and will now check on the speaker but I am sure it does not have that pad cause I replaced the speaker years ago (bough the radio used and had broken speaker cone and also screen was striped damaged). Ordered both parts and is now working really well. A hug from El Salvador and thanks for sharing your knowledge. I learn a lot from you. 73 Rob, YS1RS.
The fifth leg of a cat is the tail ... hihi
Exactly!!! Thought the same when I heard the saying first time. My grand father used to say “Era simple pero por andar buscando las cinco patas al gato, no viste la solución…. Así se aprende!”. He said that to me many times.
Agree the fifth one is the tail 😂
You gave this radio great patience
These TRXs are like modern cars - 50% of the problems (at least) are caused by the software. Operators: keep your fingers off these maintenance menues if you do not know what you are doing. Tnx Stefan for sharing your experiences.
Nice work 👍
Hello Stefan, Again, I nice video! You are just lucky that there were no short-circuits around the processor between power supply pins and other pins .. 😀 73's and thanks for your interesting videos. Stephane (aus dem Elsass)
Tnx dr stephane
My newly acquired FT-857D has foam around the speaker. It's brittle and made a mess when I took the top cover off. Got it cheap because it has the display issue. Already have an Arduino taking over for it and displaying frequency, mode and s-meter on it. Still need the crappy one for the menu.
DL7MAJ STEFAN YOU ARE GOOD AT RESTORING VINTAGE SHORTWAVE RECEIVERS AND ALIGNMENT OF VINTAGE SHORTWAVE RECEIVERS AND RESTORING HAM TRANSCEIVERS MY FRIEND
A great lesson learned! Thanks!
Very good approach to fault finding.
These boxes with the alignment menus wich are "hidden" to not be operated by the user... I think you approached it correctly. Thanks for the video.
Mni tnx
Klasse Beitrag Stefan!
Danke
Something was making me wonder about the software settings early on mostly because my Icom transceiver has many of them and I've had one or two change over the years with no reason I could determine (bit-flip?). I about fell out of my chair laughing when you said RTFM as I've said that many times to folks on the job and hams as well! ;-) TNX for sharing Stefan! 73 - Dino KLØS
Right about RTFM
Hi Stefan. I have the same thing happen to me on many radios. Seems like Yaesu is more prone to this problem. Thank you for another informative video
These TRX are computers with some RF around...hi
Some function returned when you first opened the cover, that was the first clue! Good job!
Yes! Thank you!
Hmmn....pesky hidden test functions. Who would have thought? Manual? We don't need no stinking manual. Great humor add Stefan, TNX for belly laugh.
“Read the @&@& manual” …. Easier said than done. I’ve found that I’m less inclined to read manuals as I progress in age, so it’s only natural. Thanks again for an interesting video.
How often did i say this to others and neglected it for myself ... hi
Hi Stefan, I followed with interest this video as I’ve worked on 2 857 I acquired for myself, both needing repair. I also worked on my 817. I do agree at the beginning the software alignment Is tricky. I took me some time to get it right. Regarding the conductive pad I can tell you that it was NOT on the right place. Factory position is on the side of the speaker, not were you found it. When you close the cover it goes pressing on the TMP connector at the center of the board (by memory the rx path). Someone went in and just made mistakes there as well as on the bloody alignment menu!.
Best wishes and to the next video!
73
Diego
Tnx dr Diego, i can follow your argumentation regarding this crazy pad. The history of this TRX is unknown and there are many genius in the world....hi.
I appreciate OM video like that, just one tip is adjust camera to see PCB where you probe your scope, your camera is too far.
Simetimes i forget this - sorry. But any OM, who is interested in such details, will find the test point with the schemativc and layout.
DL7MAJ STEFAN THE OWNER YAESU FT-857 HAM TRANSCEIVER IS AWESOME MY FRIEND
DL7MAJ STEFAN YOUR UA-cam VIDEOS ARE AWESOME MY FRIEND
RTFM - good advice, banging your head against the wall - not so good. A piece of conductive foam stuck to the speaker pressing on the microprocessor that is removed when testing would be so easy to miss, especially the conductive bit. I believe you found this problem faster by using standard troubleshooting methods than you would have by scrolling through all of those menus looking at numbers. I say "Well done, sir" Regards, David
Cruel indeed😊
Nice repair I have the same scope I unlocked everything did you software unlock yours Too ?
Yes, i bought it with all SW-options unlocked
QsTechService1 I too have this scope and really need the extra bandwidth/generator, but (maybe I’m dumb) but just couldn’t find (to me) a straight forward set of instructions/SW for me to confidently do it.
Very worried of bricking it and being retired too a long time to afford it.
I hate to ask this on Stefan’s channel but could you point me to where and how you did
Thank you and Stefan & 73! 😊
@SpinStar1956 Check out Dave Jones EVBlog Forms Basically you're installing custom Firmware Unlocking all features Also turning the scope into 500 MHz Just make sure to back up your Stock bin file Is first before flashing Let me know how it goes
DL7MAJ STEFAN MY HOBBIES ARE PAINTING PICTURES AND LISTENING TO SHORTWAVE AND SSB IAM THINKING ABOUT GETTING MY GRMS LICENSE
den schmalen sendefilter gegen ein 3KHz breiten sendefilter austauschen, dann sollte der 857 besser klingen.
Der Eigentümer will keine weiteren mods, der ist froh, dass das Gerät wieder läuft und benutzt es nur als Backup.
Trotzdem tnx für den Hinweis
Hallo Stefan: Y mit V verwechselt? 🙂.
Ja!! Hatte wohl aus Frust schon ein Bier zuviel ... hihi.
yet another great video by DL7MAJ ... 73s de DL6RDE/AA1KD, Charlie
Шерлок холмс!!!
Hallo Stefan,
cooler Fehler, sauber eingekreist! 73 de Dietmar, DL2BZE
Danke!
DL7MAJ STEFAN I HAVE A ZENITH TRANS OCEANIC TRANSISTOR SHORTWAVE RECEIVER I WANT TO RESTORE IT LET ME NO WARE I CAN GET RUSSIAN GERMANIUM TRANSISTORS ?
Made in Japon