Thank you for your useful guide! My friend's DX10 had the same issue, he ignored it for a while and continued using it for phone work. When I took it apart to replace the chip, his chip had shorted and burned the board quite severely. I was able to scrape away the burned sections and replace the chip still, only running wires to the necessary pins according to the schematic. But it's something to be cautious of, if your radio has this problem, probably don't want to keep using it. Who knows though maybe mine was a one-off situation.
Excellent video. You described my issue with my FTdx10 exactly. Yaesu USA wasn't much help when I contacted them and told be they only support using the USB with Windows. Doesn't say much for us users of Mac and Linux. I guess I'll have to send mine back to them for repair along with a link to your video. Maybe then they can admit to the issue. Once it is repaired I'll be sure to remove the 4.7u cap. Thanks for your work. I look forward to being able to order a CatTouch for both the dx10 and my FT710 soon.
Chris... great video. I have the CAT touch with my FTDX-10 and love it. I also have an SMD repair station, but I am not very skilled with it, so I'd rather avoid the issue with the USB port. If you get the CAT Touch to program the PROM, I'd be very intertested in buying your solution as a preventative measure. Does the failed USB port take out all of the USB function including the mouse input and communication with WSJT-X , FLDIGI and similar software products? I am assuming so. On a side note, I have a very well shielded USB cable and a type 31 ferrite donut that I've wrapped it through a few turns. Do you think that would also help from a preventative perspective? I also have the Palomar Engineering EMI kit installed which puts ferrite around every input and output of the radio (that kit addressed then USB cable mentioned). My IC-7300's USB port would occassionally lock up and I'd have to cycle power. I observed it was typically during transmit so I bought a better USB cable and it solved that problem.... but it wasn't catastrophic failure like the YAesu apparently is subject to. 73's and best wishes.
The CP2105 failure takes out USB CAT communication only. Sounds like you have good protection in place and yes, good quality USB cables are a must in an RF environment. But the no 1 thing is to make sure there is as little as possible RF in the shack. Making sure your coax is well matched and good grounding is a real must. 73 om and thank you for supporting my endeavors :)
No, I'd still use hot air but maybe turn the air pressure down a fraction & make sure the top bit of tape was closer to the chip. It was about 2mm away. Needs allot of heat as the center of the cp2105 looks like thermal ground so takes allot of heat to reflow the solder..
Did you tell Yaesu about this ?? So if I understand correctly when you buy a new transceiver you first need to remove the cap before connecting a USB cable ?? Correct ?? Cheers Phil ON4VP
Hello. I have two questions. One: Does the new CP2105 need to be programmed before or after soldering? And two: I have a similar problem with my FTDX101D but the difference is that I don't see the serial ports and the sound devices, I think the usb2512bi chip is broken. Do you have an idea how I can check which chip is bad?. Thanks.
So, if the CP2105 goes into one time programming mode, it should still work, except the VID/PID would change. Was looking for you to confirm that, otherwise, it just looks like the CP2105 just "died"?? Also wonder what would happen if the 4.7uF capacitor was removed. Seems like it doesn't need to be populated. Would it recover? I love the Kapton tape approach. Great "trick"...
My thought is: RFI triggers the CP2105 VID/PID programming routine. It wipes the existing VID/PID ready for programming but never received it. So next time you turn it on, it never responds with a VIP/PID (as it has none) & we simply see no USB device. The data sheet clearly states the 4.7uF cap is only required to program VID/PID. I discussed this all with Vuong Ngo from Silicon Labs who agreed stating "I think that removing the 4.7uF capacitor on pin 16 is a useful method to prevent the CP2105 from entering programming mode (undesired operation)". I doubt the CP2105 could be recovered if it lost its VID/PID but could be wrong..
@@ZL1CVD it is best to follow SiLabs engineering... I would think the VID/PID would be set to 0's, it has to be set to something. But if the OS doesn't recognize it, it may show up in a different location with unknown description. Anyway, good find!
Emailed them about my DX10 having a similar issue. Estimated at 800 for a new board and 90 for labor. plus shipping to get it there. Basically 400 off from a new rig.
That's better than my FT-991A...they want $1,000 USD for the main board. I shared this video and Chris' other one with Robert, the tech at Yaesu and explained the issue. They won't replace just the chip, only the entire board.
@@TheMisterNomad yep same with mine .... luckily i had a friend who works on computers at the component level and I took the risk of letting him attempt the repair... otherwise id just have to make do without USB control of rig or sell for scrape. I won't be buying any more yaesu radios...
Hi, can you describe how to check the USB2512 chip for functionality? On my FTdx10, both the com port and the audio interface are no longer present. Thank you
@@timo3041 I replaced the CP2105 based on the video, the USB COM and Audio ports were not visible. Replacing USB2512 will restore the functionality of the audio and USB ports
They should cut the trace on the 4.7 uf after the radio is programmed at the factory. I believe the real test is if it will take a FW upgrade/Update...
I guess my point is, the CP2105 is not programmed at the factory. If it was, the VID/PID would be different than the default values AND we would not see errors with failing COM port like this. Simply not populating the cap would possibly solve everything..
Great detective work. Thanks for posting and sharing.
Thank you for your useful guide! My friend's DX10 had the same issue, he ignored it for a while and continued using it for phone work. When I took it apart to replace the chip, his chip had shorted and burned the board quite severely. I was able to scrape away the burned sections and replace the chip still, only running wires to the necessary pins according to the schematic. But it's something to be cautious of, if your radio has this problem, probably don't want to keep using it. Who knows though maybe mine was a one-off situation.
Excellent video. You described my issue with my FTdx10 exactly. Yaesu USA wasn't much help when I contacted them and told be they only support using the USB with Windows. Doesn't say much for us users of Mac and Linux. I guess I'll have to send mine back to them for repair along with a link to your video. Maybe then they can admit to the issue. Once it is repaired I'll be sure to remove the 4.7u cap. Thanks for your work. I look forward to being able to order a CatTouch for both the dx10 and my FT710 soon.
Chris... great video. I have the CAT touch with my FTDX-10 and love it. I also have an SMD repair station, but I am not very skilled with it, so I'd rather avoid the issue with the USB port. If you get the CAT Touch to program the PROM, I'd be very intertested in buying your solution as a preventative measure.
Does the failed USB port take out all of the USB function including the mouse input and communication with WSJT-X , FLDIGI and similar software products? I am assuming so.
On a side note, I have a very well shielded USB cable and a type 31 ferrite donut that I've wrapped it through a few turns. Do you think that would also help from a preventative perspective? I also have the Palomar Engineering EMI kit installed which puts ferrite around every input and output of the radio (that kit addressed then USB cable mentioned). My IC-7300's USB port would occassionally lock up and I'd have to cycle power. I observed it was typically during transmit so I bought a better USB cable and it solved that problem.... but it wasn't catastrophic failure like the YAesu apparently is subject to.
73's and best wishes.
The CP2105 failure takes out USB CAT communication only. Sounds like you have good protection in place and yes, good quality USB cables are a must in an RF environment. But the no 1 thing is to make sure there is as little as possible RF in the shack. Making sure your coax is well matched and good grounding is a real must. 73 om and thank you for supporting my endeavors :)
Thanks for this Chris.
Would you change your methodology for heating and removing the chip to safeguard the other localised components?
G0DVF
No, I'd still use hot air but maybe turn the air pressure down a fraction & make sure the top bit of tape was closer to the chip. It was about 2mm away. Needs allot of heat as the center of the cp2105 looks like thermal ground so takes allot of heat to reflow the solder..
Awesome content Chris!! What a discovery!! Cheers
Cesar EA3IAV
Did you tell Yaesu about this ?? So if I understand correctly when you buy a new transceiver you first need to remove the cap before connecting a USB cable ?? Correct ?? Cheers Phil ON4VP
Hello. I have two questions. One: Does the new CP2105 need to be programmed before or after soldering? And two: I have a similar problem with my FTDX101D but the difference is that I don't see the serial ports and the sound devices, I think the usb2512bi chip is broken. Do you have an idea how I can check which chip is bad?. Thanks.
Have same problem in my ftdx10, my question is how check?
@@lockhock8400 follow up video shows how to check here: ruclips.net/video/3qAV5ouJpKQ/видео.html
follow up video shows how to check here: ruclips.net/video/3qAV5ouJpKQ/видео.html
When scan the non-working chip, do you see incorrect IDs?
So, if the CP2105 goes into one time programming mode, it should still work, except the VID/PID would change. Was looking for you to confirm that, otherwise, it just looks like the CP2105 just "died"?? Also wonder what would happen if the 4.7uF capacitor was removed. Seems like it doesn't need to be populated. Would it recover?
I love the Kapton tape approach. Great "trick"...
My thought is: RFI triggers the CP2105 VID/PID programming routine. It wipes the existing VID/PID ready for programming but never received it. So next time you turn it on, it never responds with a VIP/PID (as it has none) & we simply see no USB device. The data sheet clearly states the 4.7uF cap is only required to program VID/PID. I discussed this all with Vuong Ngo from Silicon Labs who agreed stating "I think that removing the 4.7uF capacitor on pin 16 is a useful method to prevent the CP2105 from entering programming mode (undesired operation)". I doubt the CP2105 could be recovered if it lost its VID/PID but could be wrong..
@@ZL1CVD it is best to follow SiLabs engineering... I would think the VID/PID would be set to 0's, it has to be set to something. But if the OS doesn't recognize it, it may show up in a different location with unknown description. Anyway, good find!
Emailed them about my DX10 having a similar issue. Estimated at 800 for a new board and 90 for labor. plus shipping to get it there. Basically 400 off from a new rig.
That's better than my FT-991A...they want $1,000 USD for the main board. I shared this video and Chris' other one with Robert, the tech at Yaesu and explained the issue. They won't replace just the chip, only the entire board.
@@TheMisterNomad yep same with mine .... luckily i had a friend who works on computers at the component level and I took the risk of letting him attempt the repair... otherwise id just have to make do without USB control of rig or sell for scrape. I won't be buying any more yaesu radios...
Before you desolder the CP2105 chip, measure the USB2512 chip.
USB2512 was damaged in my FTDX-10. You will save yourself a lot of work.
Hi, can you describe how to check the USB2512 chip for functionality? On my FTdx10, both the com port and the audio interface are no longer present. Thank you
@@timo3041follow up video shows how to check here: ruclips.net/video/3qAV5ouJpKQ/видео.html
@@timo3041 I replaced the CP2105 based on the video, the USB COM and Audio ports were not visible.
Replacing USB2512 will restore the functionality of the audio and USB ports
But do you solder with lead-free tin or?
I do not use lead free. As a service technician, I find it unreliable for hand soldering.
They should cut the trace on the 4.7 uf after the radio is programmed at the factory. I believe the real test is if it will take a FW upgrade/Update...
I guess my point is, the CP2105 is not programmed at the factory. If it was, the VID/PID would be different than the default values AND we would not see errors with failing COM port like this. Simply not populating the cap would possibly solve everything..