Fried Radio?

humblehacker · Post by **humblehacker** » Mon Oct 05, 2015 4:19 pm

Hello,
I have a 9xr Pro that was performing as expected until yesterday when I tried inserting an OrangeRX OpenLRS module and the screen went dead. Now all that happens when I try to turn it on is an ominous buzzing sound and the blue light will come on. Previously, I had been using both the DSM2/DSMX module and the OpenLRS without difficulty. On further inspection the glass fuse appears to be fine, but it is still acting like it was fried... Is there anything I can do for it?

Post by **MikeB** » Mon Oct 05, 2015 5:43 pm

Was the radio powered on when you plugged the module in?

Near the top left of the main board is the 5V pre-regulator. On the main board near this are two test points labelled 0V and 5V.
When you switch on, do you get 5V between them?

Mike.

Post by **jhsa** » Mon Oct 05, 2015 6:22 pm

The OP seems to be only telling half of the story

Here is the link to his other post..

viewtopic.php?p=102098#p102098

João

humblehacker · Post by **humblehacker** » Tue Oct 06, 2015 6:27 pm

jhsa wrote:The OP seems to be only telling half of the story
Here is the link to his other post..

viewtopic.php?p=102098#p102098

João

Rats foiled again! If only I hadn't been found out I would've had so much to gain

I might as well share the information I was so obviously trying to "hide" on purpose-

Yesterday I tried to connect to the OpenLRSng configurator by following the instructions stating that I would have to connect a 3.3v FTDI converter while the module was inserted in the transmitter housing. I had successfully flashed to the latest firmware via the configurator using what I thought was this method but now I can't remember if I used an FTDI or a JTAG... Anyway, something happened in the process that appears to have shorted my TX!? The 9XR-Pro won't boot at all now and only emits a faint buzzing sound instead! I can confirm that the FTDI was running at 3.3v and I have used it for other 3.3v sensitive projects in the past.

In all seriousness, obviously I didn't "hide" anything on purpose. I thought I had outlined all the relevant details in my OP but apparently forgot. I went into more detail about the FTDI 3.3v issue in the OT as I was following their instructions to power the OpenLRSng module from the TX. That said, I don't think the radio was powered on when I first plugged it in. So is this the issue? Has anybody else tried to program the OrangeRX OpenLRS module from the 9xr-Pro?

humblehacker · Post by **humblehacker** » Tue Oct 06, 2015 6:45 pm

Also- Just to show that I'm not imagining things, the instructions I followed can be found here- https://github.com/openLRSng/openLRSngW ... a-computer

Note: JR and Futaba modules (Non-Deluxe)

These transmitters need to be powered by your radio, as the power supplies on board don't like being powered with your USB-Serial adapter. These modules should be plugged into your radio and the radio switched on in order to program them. For OrangeRX modules it's common to cut a hole in the outer plate exposing the programming pins, so you don't have to unscrew the plate every time.

Post by **jhsa** » Tue Oct 06, 2015 6:51 pm

Of course you weren't hiding the info on purpose, you don't gain anything doing it

But I was just making sure that the person that is helping you here knows that there is some more info

The problem is also when we create more than one topic about the same problem, it is more difficult for people to follow what is going on as the information will be scattered..
So, a good practice is to open only one topic.. It will be seen as some of us read all the posts.

João

Post by **jhsa** » Tue Oct 06, 2015 6:53 pm

MikeB wrote:Was the radio powered on when you plugged the module in?

Near the top left of the main board is the 5V pre-regulator. On the main board near this are two test points labelled 0V and 5V.
When you switch on, do you get 5V between them?

Mike.

Can you do what Mike ask here? This could help to find out where the problem is..

João

humblehacker · Post by **humblehacker** » Tue Oct 06, 2015 11:23 pm

jhsa wrote:
MikeB wrote:Was the radio powered on when you plugged the module in?

Near the top left of the main board is the 5V pre-regulator. On the main board near this are two test points labelled 0V and 5V.
When you switch on, do you get 5V between them?

Mike.
Can you do what Mike ask here? This could help to find out where the problem is..

João

OK. Will do!

Post by **Kilrah** » Wed Oct 07, 2015 1:44 am

humblehacker wrote:Also- Just to show that I'm not imagining things, the instructions I followed can be found here- https://github.com/openLRSng/openLRSngW ... a-computer

Note that this absolutely does not say that you should insert the module while the radio is on (which is a very silly thing to do as you've found out), it just says the module must be in the radio and the radio must be on, even implying to insert the module first then turn on.

humblehacker · Post by **humblehacker** » Wed Oct 07, 2015 9:31 pm

OK. I'm getting something in the range of 2.25v under the DCV setting on my meter. It definitely seemed to do something though as it interupted the buzzing sound when I touched the leads.

humblehacker · Post by **humblehacker** » Wed Oct 07, 2015 9:40 pm

Kilrah wrote:
humblehacker wrote:Also- Just to show that I'm not imagining things, the instructions I followed can be found here- https://github.com/openLRSng/openLRSngW ... a-computer
Note that this absolutely does not say that you should insert the module while the radio is on (which is a very silly thing to do as you've found out), it just says the module must be in the radio and the radio must be on, even implying to insert the module first then turn on.

I never said that I had the radio on first as you mention common sense would normally prevent my doing so. Of course I've made dumber mistakes without realizing it in the past so I can't definitely rule that out as the cause. In any case, I never presumed that the instructions were to turn the radio on first. Rather I took it to mean that the module must be inserted in the radio before connecting the FTDI adapter. AFAIK I havent done anything that wasnt explicitly recommended in the aforementioned instructions.

Post by **jhsa** » Wed Oct 07, 2015 10:20 pm

so, you are getting 2.25V between the 5V and 0V pads Mike mentioned?

João

humblehacker · Post by **humblehacker** » Thu Oct 08, 2015 5:12 pm

Yes. Assuming I'm using the right settings on my meter. That's what it's showing.

humblehacker · Post by **humblehacker** » Thu Oct 08, 2015 5:34 pm

Just to confirm whether I'm doing this right, here is a picture of my multimeter touching the leads-

I also took this close up of the wiring as I have it now in case something appears out of the ordinary-

Post by **MikeB** » Thu Oct 08, 2015 6:01 pm

OK, we have another 9XR-PRO user with a problem which might be similar. I've just posted some instructions for voltage testing here: viewtopic.php?f=122&t=7668#p102219.

Please try measuring the voltages I describe in that post.

Mike.

humblehacker · Post by **humblehacker** » Wed Oct 14, 2015 6:43 pm

OK. the measurements between FU1 and R9 read the same whether I turned the switch on or off. Measurements of the J5 header pins are not so consistent. I get nothing between 2 and 3 whether the switch is on or off. Voltages between 1+2= 11.88v and 3+5=12.12v when switched off. However, when I power on and measure between 1+5, I get 3.67v? Between D2 and Pin 10 of 10 way connector I get about 3.4v with the switch on (and nothing when switch off)...

humblehacker · Post by **humblehacker** » Wed Oct 14, 2015 7:18 pm

Also, I have no idea if this makes any difference but in comparing images posted by the user in the aforementioned thread to my own board I noticed one small difference which may or may not be relevant... In both radios there is a sticker with a blue mark covering what I believe it is a thermal fuse over FU1? However, the blue mark is reversed on my own model in comparison to his. Hopefully, the following graphic can explain better than I-

Does this make any difference?

humblehacker · Post by **humblehacker** » Mon Oct 26, 2015 5:14 pm

Looks like I'm officially stuck... I can't do anyhtign without a radio but I can't afford something like a Taranis and I dont want to buy another 9XR Pro if this is what I can expect... I guess my only option is to build my own with a Mega 2560?

Post by **MikeB** » Mon Oct 26, 2015 6:44 pm

humblehacker wrote:Between D2 and Pin 10 of 10 way connector I get about 3.4v with the switch on (and nothing when switch off)...

One side of D2 goes to J5 pin 5, the other side of D2 goes to pin 10 of the 10-way connector. Pin 8 of the 10-way connector is ground, so this should help make sure you have pin 10 correctly selected.
You shouldn't have 3.4V between D2 and pin 10 of the 10-way connector.

With power on, please measure the voltage between pins 8 and 10 of the 10-way connector.

Mike.

OctavioS · Post by **OctavioS** » Sat Dec 26, 2015 12:10 pm

9XR PRO on special price

Hobbyking

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