I just got a 9800. Not my favorite radio by any means but it works. I should have just spent the extra and got one that matches my KG1000+. I did get the 9800+ if that makes a difference.
Looks like I'm the 500th sub. :) I was looking at getting one of these radios but I dont think its worth the hassle. It must have had prior trouble. Thanks for the video. 73
Yep my TYT TH-9800 has been sitting in a box for three years now. Needs this fix as it has the beep of death. Maybe now that this video has finally been done in English as opposed to the Russian You-Tube video fix I found a few years ago I may actually order up the parts and go through with it, if not only to dump the radio at a hamfest.
Thanks for the video. My TYT just crapped out on me. Doesn’t look like the same issue, but if I get it fixed I will definitely do the Zeaner diode mod.
It looks like the coil closest to Q409 Overheated and melted and might’ve shorted out some resistors and the cap in that area. I can send you a picture if you want. It is under warranty so I contacted the place I bought it from and they are sending me out a replacement.
Hi, THANKS so much for the video and explanation. I have very recently received my TH-9800 PLUS version s/n 2306AR00142 from China and it also has the zeners missing. I see the resistors you removed were 100 Ohms, in my version they are 4R7 Ohms and next to impossibly small for me to remove; however I do think I can solder in the 3.9V zeners as the pads are larger. Possibly a stupid question but will it matter if I leave the 4R7 resistors in place and just add the zeners? Sincere thanks. Paul, G0odp.
Hey do you know the voltage and the watt rating of the zener diodes used in the mod? I saw the Russian video and he was using 3.7v diodes, I just wanted to ask you to see what you say. Thanks
If it’s only on repeaters, then you probably have something programed wrong or wrong setting in the radio that is not correct. If everything is program correctly, you need to make sure you have the end code/decode turned on for the PL tones to transmit.
@@redviper2212 I’m going to order a swr/watt meter from Amazon to test the watts on my tyt too make sure is properly using full power would any watt meter work?? There is Surecom swr meter 27-30mhz that only works on those frequency would that work to test the power on my radio??
Like redviper has said, you must double check that you are transmitting the correct PL tone if the repeater requires it. Also you must have your + or - offset setup for the repeater input frequency. If you have done all of these things correctly, there could be an issue with the radio still. I just happen to have one in the repair pile that has PL tone issues (it will use the correct tone for a few seconds and then drift into the wrong tone eventually and drop the repeater). That repair video will happen soon, I'm curious to see if it is caused by the same CMX chips as the one in this video.
Any cheap meter will work. The cheaper ones will give you "Peak" wattage readings instead of "average" so they will appear a bit high. That Surecom one is actually not too bad. It will read PL tones as well which is convenient.
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Informative video with irritating, and distracting backgound noise.
I just got a 9800. Not my favorite radio by any means but it works. I should have just spent the extra and got one that matches my KG1000+. I did get the 9800+ if that makes a difference.
I got this radio new from RadioOddity and it was turning off randomly as well. I sent it back.
Looks like I'm the 500th sub. :)
I was looking at getting one of these radios but I dont think its worth the hassle. It must have had prior trouble.
Thanks for the video. 73
Thanks for the sub!
Yep my TYT TH-9800 has been sitting in a box for three years now. Needs this fix as it has the beep of death. Maybe now that this video has finally been done in English as opposed to the Russian You-Tube video fix I found a few years ago I may actually order up the parts and go through with it, if not only to dump the radio at a hamfest.
This is something I have to do to mine ! What zener diodes do you use? Great info !
What kind of power do these put out on 10 and 6 meters. I can't seem to find that information anywhere. Thanks for the video.
I love the opening you made!
Thanks!
Thanks for the video. My TYT just crapped out on me. Doesn’t look like the same issue, but if I get it fixed I will definitely do the Zeaner diode mod.
That's too bad. What is wrong with it? I have another two of them in line for repairs as I get through the pile.
It looks like the coil closest to Q409 Overheated and melted and might’ve shorted out some resistors and the cap in that area. I can send you a picture if you want. It is under warranty so I contacted the place I bought it from and they are sending me out a replacement.
@@redviper2212did you buy it on eBay
@@warzone7571 no got it from radioddity
I want to buy a swr/ watt meter to test my tyt th 9800 will any work too test my power on my radio Amazon has some fo 30$
Hello. After returning from service, the output power has decreased. Can I restore it?
Just bought one of these. Has a no audio issue. Could you and would you fix mine for me and ball park figure on the cost please??
Hi, THANKS so much for the video and explanation. I have very recently received my TH-9800 PLUS version s/n 2306AR00142 from China and it also has the zeners missing. I see the resistors you removed were 100 Ohms, in my version they are 4R7 Ohms and next to impossibly small for me to remove; however I do think I can solder in the 3.9V zeners as the pads are larger. Possibly a stupid question but will it matter if I leave the 4R7 resistors in place and just add the zeners? Sincere thanks. Paul, G0odp.
What will happen if you leave the 100 ohm resistor in?
Did you get a new desoldering pump??
Yes I did! It's a Hakko and it is lovely
how to get this circuit for this model
Very nice
Thank you!
Hi where did u find the service information for this radio?
Hey do you know the voltage and the watt rating of the zener diodes used in the mod? I saw the Russian video and he was using 3.7v diodes, I just wanted to ask you to see what you say. Thanks
1N4730 3.9V
with all my respect but you are calling the filters "relays"? strange
The black plastic packages yes, they are mechanical relays and very poor-quality ones.
@@salvagegeek the only relays on the board in your case are white ! those are "450KHZ ceramic filter" , have a nice day
@@salvagegeek These are IF filters😂 not relay...
I have this radio I ordered it on eBay brand new but when I try too transmit on repeaters it won’t transmit ???
If it’s only on repeaters, then you probably have something programed wrong or wrong setting in the radio that is not correct. If everything is program correctly, you need to make sure you have the end code/decode turned on for the PL tones to transmit.
@@redviper2212 I’m going to order a swr/watt meter from Amazon to test the watts on my tyt too make sure is properly using full power would any watt meter work?? There is Surecom swr meter 27-30mhz that only works on those frequency would that work to test the power on my radio??
Like redviper has said, you must double check that you are transmitting the correct PL tone if the repeater requires it. Also you must have your + or - offset setup for the repeater input frequency. If you have done all of these things correctly, there could be an issue with the radio still. I just happen to have one in the repair pile that has PL tone issues (it will use the correct tone for a few seconds and then drift into the wrong tone eventually and drop the repeater). That repair video will happen soon, I'm curious to see if it is caused by the same CMX chips as the one in this video.
Any cheap meter will work. The cheaper ones will give you "Peak" wattage readings instead of "average" so they will appear a bit high. That Surecom one is actually not too bad. It will read PL tones as well which is convenient.
try the other offset. you cant do a plus offset on a 449mhz repeater, that's out of band for example.