Replace 5V regulator

[mmilan]

Is this a good price and place to order the atmega2561 ? (http://components.arrow.com/part/detail ... n=octopart)

Atmel - ATMEGA2561-16AU: (http://download.siliconexpert.com/pdfs/ ... oc2549.pdf) / Pricing: $12.50


Bob

Looks like the right chip, but " 7 weeks lead time"? Good price though. I bought mine from Digikey. They ship same day usually and have great customer service if you have any problems.
Mike

[Kilrah]

In Stock:
(Ready to Ship) 2

If he's quick...

[bob195558]

Where is this circuit on the Stock 9x Mainboard?

In this part of the 9x Mainboard Schismatic, dose the U9 Component represent the 3.3V Regulator, (Labeled: J E= DMV1M) 3V3 output?

And I am also not sure what the U10 Component is with the VDD_2V5 output ?

The Component (upper right side of CPU) on the 9x Mainboard labeled J6 with 3 connections and has a 104 Resister to a 154 Resister
and on the other side a 103 Resister, could this be the U10 Component ?

9x Schismatic_.pdf

Stock 9x Mainboard Schismatic

(190.13 KiB) Downloaded 354 times

Bob

[jhsa]

That part of the schematic is on page 1. I think it belongs to the RF module..

The part you want is on page 5. But there is only a 5V regulator. The schematic is from an earlier version of the 9x radio. It used a 5V LCD so it didn't have the 3.3V regulator.. The new radios have a 3.3V LCD hence the regulator to power it..

João

[bob195558]

Thank you for the info, João!
This explains why this Schematic was not making sense to me, when I was trying to match up the components with our Version-2, 9x Mainboard Radio.
An update: about the 9x Mainboard that I smoked on Feb 14, 2014.
I still plan to continue to troubleshoot this smoked 9x Mainboard to see what may be still working on it.
I plan to use placement components form my 9XR mainboard that I have.
I will replace the 476J / 93H31 Capacitor (Tantalum) that is next to the 3.3V Regulator, with the Larger 476A / 96JT4 Capacitor from the 9XR Mainboard.
And for the very small brown, surface mount capacitor (which I have not been able to verify the values for it) I speculate the value to be 10uF.
I will choose one off of the 9XR Mainboard that looks like this very small brown, surface mount capacitor on the 9x mainboard.
I do not want to remove the one on the other 9x V2 Mainboard that I accidentally Fuse Brick over a year ago, as I believe this is a better 9x mainboard to do the CPU upgrade to.

If any one knows the value of this very small brown, surface mount capacitor and maybe also knows which very small brown, surface mount capacitor on the 9XR mainboard
that has the same value, I would appreciate you help.

Add Edit Update 1: I have the 5V Regulator installed with the replaced capacitors.
When reading the ohms values with the Multimeter Dial Selector set to 20K ohms, the 9x 3.3V Regulator on the Smoked 9x Mainboard is still reading 00.1 ohms,
it should be reading 3.2 ohms with the Multimeter Dial Selector set to 20K ohms.
The two outside legs of the good 3.3V Regulator reads no connection,
But the Smoked 9x Mainboard is reading 198.5 ohms.
It's not matching up between the good 9x Mainboard and the Smoked 9x Mainboard,
It looks to me that the Smoked 9x Mainboard 3.3V Regulator may be Smoked?

Add Edit 2: Here is what I have for readings with a good Stock V2 9x Radio Mainboard:

9x V2 stock Mainboard Voltage Circuit

Add Edit 3: Why dose the Stock V2 9x Radio: 3.3V Regulator, have the voltage values on the connection legs, in different places, then the 5V Regulator has ?
Would this AMS1117-3.3 Regulator (http://www.alldatasheet.com/datasheet-p ... 7-3.3.html) work to replace the stock 3.3V Regulator ?

Bob.

[bob195558]

Hi Everyone,
I removed the 9XR CPU ATMEGA128A from it's mainboard today.
I think the ATMEGA128A CPU is OK.

9XR CPU ATMEGA128A Top Side of removed CPU.

9XR CPU ATMEGA128A Under Side

9XR CPU ATMEGA128A Under Side

But it was much more difficult then I was expecting it to be,
as you can see I destroyed the 9XR Mainboard, CPU connections.
This 9XR Mainboard has been designated a parts-board so there is no loss,
but I would have liked to have had better results of no damage to it.

I am very concerned about the possibility of damaging the Stock 9x Mainboard with the Fuse Brick CPU on it.
I need a better way of removing the Fuse Brick CPU, as to have no damaging to it's good Stock V2 9x Mainboard.

I am open to any suggestions to how I should go about removing the 9x Fuse Brick CPU and not causing any damage to the Stock V2 9x Mainboard.

Bob

[jhsa]

http://www.chipquik.com/

This was what I used to remove the chip..


João

[LTMNO]

Second that... chipquick... works like a charm.

[bob195558]

Hi João and LTMNO,
Thank you for the solution, I ordered the ChipQuik-Kit for $13.20 from ebay with free shipping.
I viewed several youtube videos and now understand how it works, Looks good.

http://www.youtube.com/watch?v=UmD7F0--7Lc

and (http://www.digikey.com/suppliers/us/chi ... 1t2-VQ16-c).

I hope to use the 9XR CPU, but if I have trouble, I will get the ATMEGA2561-16AU CPU.

Bob

[jhsa]

Bob, I'm a bit concerned about the cpu you removed from the board. How did you remove it? How much heat and for how long? These things don't like to get hot for very long.
Also, the 9x mainboard is not the best quality and it's not a good idea removing chips many times.

Joao

Sent from my GT-I9195 using Tapatalk

[ReSt]

But the board isn't really that bad.

Using QuickChip the first time, I replaced the M64 with a M128 and, guess what, I soldered in the new CPU turned 90 degree.
So I had to remove it again. And the board and the CPU stayed in perfect condition. So I could solder it in again, this time correctly positioned and it was, and still is, perfectly working.

Reinhard

[jhsa]

Correct.. but that is with chipquik..

[bob195558]

Hi João,
I appreciate your concern, for I have them too.
I have done very little soldering and so, it is a learning curve for me.
30 watts Soldering Iron (made in china no band) I have with a .125 (inch) Dia Tip
that I have filed down to a long angle of about 10 degrees.

When I detach the 9XR CPU tabs from this now Parts 9XR mainboard,
I used an Exacto Knife, to when the solder liquefied I then lifted the CPU tap up (bending it up).
It started out working, but when I got to the center of the CPU tabs, I had a lot more difficulty.
As you can view my posted picture of the 9XR mainboard and the ATMEGA128A CPU that I have removed,
that many of the tracks, I cut through, causing big time damage to this Parts 9XR mainboard.

I see I needed to do something different and your suggestion to use the ChipQuick Kit, is what I needed to know and have it ordered.

I did not hold the Soldering Iron on the CPU tabs very long as the Exacto Knife Blade would become affixed to the CPU Tabs and the mainboard traces several times.
I may have not used enough heat, as I must have tore some of the mainboard tracks out (was not able to see what was happening under the Exacto Knife Blade on the 9XR mainboard).
Using more Flux dose help a lot.

I know I need to clean up the 9XR ATMEGA128A chip tabs and move them into place, if and when I resolder it to the good Stock V2 9x Mainboard with the Fuse Brick CPU.
With the ChipQuick Kit and viewing the YouTube Videos, I hope to be able to remove the Fuse Brick CPU off my good 9x Mainboard
and resolder the ATMEGA128A chip from the Parts 9XR Mainboard.

I think I see what you are saying, it would be better to get the ATMEGA2561-16AU CPU and do the un-soldering and re-soldering for the lesser amount of times.

I am also thinking ...... I should purchase the Weller WES51 Analog Soldering Station to help with doing this Fix-Mod.

Bob

[bob195558]

Hi,
I just ordered Two: ATMEGA2561-16AU CPU's,
with 3 Day shipping $10.00, Sales Tax $1.50: (http://components.arrow.com/part/detail ... n=octopart).

[LTMNO]

Hey Bob, It takes time.. I wouldn't worry as I did the same thing my first time before chipquik.. I had used an exacto knife and just ran it against the pings of the m64, worked like a charm, then I pulled up the chip and noticed that I ruined the pcb a bit with pads as well... that was okay as there were traces that I could make the connections to. I then added the M128 and all was fine. If you have patience and time you can make it work... its logical, you can follow the traces and pick up where the lead comes if they are available.

You couldn't tell but I damaged mine where all the arrows are.

all the best!

[LTMNO]

Hello All,
I have done two things.. installed my MegaSound9x board and have done the VoltReg Upgrade as well
Unfortunately the Radio doesn't turn on anymore... and let me clarify that.. it turns on but all i hear is a humming sound... and no LCD working.
I have taken it apart and resoldered the LCD lines again including most others from the MegaSound Board.
I am running 8.4V Life Battery Pack on my Radio as you only need approx +6.8v to run the Radio... granted I never go below 7.5v and full charge on the Life Batteries is 8.4v
Currently the Charge in the Battery is 8.40v and I get 8.40v to the MegaSound +Terminal of the board.

Does this mean the Regulator is working?

[bob195558]

Hi LTMNO,

I turned and lighten your photo so to view it a little better.
I think it looks good.
Do you still get the 3.3V from the 3.3V Regulator output ?

I used some electrical tape on the backside of the SmartiesParts board where the 5V Regulator
makes contact with it, to make sure there would not be a short there.
I hope this help a little.

Bob

[LTMNO]

Hi Bob,
Thanks for the illustration, I just got the radio powered on finally and realized that it was related to my MegaSound9x Mod. I managed to Damage a 10K Resistor on D1 Vias and that was the culprit.

I replaced it and we are back in business. In fact, i am going to take power from the Regulator as it seemed to remove the Hiss/Humming sound in the Speaker when it was connected.

I can't explain it, but I am going to go with it.

Cheers.

Pino.

[Flaps 30]

Great to hear that it is all working now and that the 5 Volt regulator modification went well.

[LTMNO]

Thank you, works great!

[bob195558]

5V Regulator Mod Mishap Update

Made the decision to try the 9x TelemetrEZ board that was installed in the 9x FlySky Radio
that I had the wrong 5V Regulator (12V Regulator) mod mishap to a 9x Turnigy Radio.

Now with using this 9x TelemetrEZ board, I am getting the Throttle Switch and the Aileron Switch activated all the time.

So there is a lot more damage to the hardware circuitry then I hoped.
I think I will have to get another 9x TelemetrEZ board.

Chip Smoked on this 9x TelemetrEZ board.

Bob

[bob195558]

Stock 9x to ATMEGA2561-16AU CPU Chip Upgrade Mod

I have a Question about the 9x Solderless Programmer Rev 2.3 Board: When I do the CPU Upgrade Mod (To: ATMEGA2561-16AU Atmel CPU),
will the 9x Solderless Programmer Rev 2.3 Board still work with the new ATMEGA2561-16AU CPU ?

Bob

[MikeB]

Yes, the programmer will still work.

Regarding the TeZ board, can you confirm you have the FrSky version of er9x flashed?

Mike.

[bob195558]

Thanks Mike,

I did not remember to flash the er9x-FrSky Version to this Radio.
I will do it right now.
Bob

[bob195558]

Hi Mike,

After flashing to SVN: er9x-r810, VERS: V.1349-Mike, DATE: 17.02.2014, MOD: FRSKY NT.

I still have the back Throttle Switch and the Aileron Switch, activated all the time.

Changing these Switches also has no affected.

Do you think the 9x TelemetrEZ board could have become damage when I had the wrong voltage regulator installed?

Bob

[bob195558]

Hi Mike,

I can try taking the TelemetrEZ board out of my 9x Radio and try it in this 9x Turnigy Radio and see if it works correctly.

Bob

[MikeB]

Worth trying.

Mike.

[bob195558]

Hi Mike,

Changing the TelemetrEZ board fixed the problem with this RC Group Member's 9x Radio.
Viewing the Photo that I posted, the Chip I point to looks blistered and/or burned.

So the TelemetrEZ board must be using the 5 volts from the 5V Regulator.

I think I need to order a new TelemetrEZ board to replace this one.

Do you think the 9x Solderless Programmer Board Rev 2.3 is OK?

It looks OK as I do not see any component's to be damaged.


Bob

[MikeB]

Can't tell about the programmer, but it should be safe to try reading the EEPROM using it. If it reads, then the programmer is most lijkely OK.

Mike.

[bob195558]

Hi Mike,

I swapped the 9x Solderless Programmer Board Rev 2.3 from 9x Radio that I had the Voltage Regulator Mishap with
and was able to flash eprom-model-list back and forth with no trouble.
So I think its OK!

I order a new 9x TelemetrEZ board to replace the one from my 9x Radio.
Is it reasonable to try, ....... to replace the chip that is visually burned on the bad 9x TelemetrEZ Board or should I just forget it ?

Bob