Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

[PaulManc]

Hi,

Following this topic with the lid being off my 100D

Is there any evidence to suggest the new fuse or bridge enables the 100D to run P2 more reliably. Also curious if anyone did the cooling mod(uprated fan) + this mod together actually found more or less stability.

OT but the pressed riser ~~~~ filter under the fan looks directional to the sides of the case. I was thinking about turning it 90deg toward the PSU and the F3 fuse in a bid to pull heat from the lower deck....

TIA

[w-u-2-o]

My 100D continues to gather dust since the 8000 is the daily driver. Thus, unfortunately, no news on the F3 topic. But if I was going to blow the dust off of it I'd do the mod.

A bit off topic, but see my old article on 100D cooling here: http://wu2o.dyndns.org/wu2o_fans.html. It should apply to any of the older models. Just putting an external fan on the top of the case does wonders.

[PaulManc]

I have the updated fan as mentioned in your article which should arrive sometime this week. Like you said, it certainly cant hurt and I have a suitable 120mm fan which can go on the top already.

There is now way I would attempt to the new fuse myself but the component is ridiculously cheap so I'll order a couple maybe and see if I can find a professional that would do it for me.

https://www.mouser.co.uk/ProductDetail/ ... yHag%3D%3D

Thanks for the response.

[w-u-2-o]

Don't forget the external fan. That's what really matters.

[PaulManc]

Don't forget the external fan. That's what really matters.

Roger that, Scott.

Bobs

100D Full Board F3 Bridged.png (1.09 MiB) Viewed 24056 times

Pauls

IMG_4149.JPG (118.1 KiB) Viewed 24054 times

I just noticed on Bobs Angelia board the power plug stands vertical (bottom right). My one is different and turned 90 degrees toward the PSU. Does this depict if early/late board for the nosy bugger in me.

Cheers.

[w-u-2-o]

Well done. Do let us know how P2 firmware runs for you.

Can't say for certain on the age of your board. My 100D is one of the oldest units, and is like yours, so I'd initially guess "early build". However, maybe that is a change they made after adding the center shield piece to the design, so maybe later build, because wouldn't the vertical power connector interfere with the shield? Does Bob's unit have the center shield?

If you look closely at the photo, you can see mine has the improved TCXO board, the old linear supply swapped for the switching power supply, and is modified for an external PureSignal switch to avoid the horrendous crosstalk on the early rev. 15 and 16 RF boards.

If I ever get around to it, I think I'll add a heatsink to the Ethernet PHY chip as well.

IMG_20160320_135903208.jpg (4.03 MiB) Viewed 24050 times

[PaulManc]

Would you believe both fuse models are on 20+ week lead time so that has put paid to that. Not sure its a good idea to swap the fuse for a jumper so ill probably do all the jobs including the RX1 mod and test the heck out of the firmwares available. Are you able to run P2 with your 100D? If so which version. Also, have you performed the throttling Index as a bench mark?

I may fire up the CNC and make a new front panel with a fan or two mounted to it, replace the centre shield( would stainless work ?). This radio could keep me busy whilst the 7000dle mk2 sits there laughing at me

Good evening from over the pond.

[w-u-2-o]

Four years after starting this topic I'm finally getting around to modifying my old ANAN-100D. I ordered a Littlefuse 1210L450SLWR to replace the stock part so as to do it up right.

Upon taking apart my 100D, imagine my surprise when I find this:

PXL_20220623_010317064.jpg (597.17 KiB) Viewed 23400 times

It turns out that during the very, very, early days of Protocol 2 development, way back in 2016, for which I was a beta tester, my 100D absolutely refused to run the code. I sent it back to Doug for "repair" and it came back in a state that allowed it to run the early P2 firmware. He had said that he had replaced the Angelia card. That part was no surprise, because it was evident early on that the firmware builds were not making timing on all serial numbers. But what he neglected to mention was that he apparently also "fixed" the F3 problem. In fact, at that time, nobody was even talking about the F3 problem, it was not common knowledge. But it must of been so to the Apache head shed. Interesting...

[Thierry]

Hello,
I am contacting you because I have an ANAN 100D.
Interested in switching to protocol 2, I decided to replace the PTC fuse with a 4A PTC fuse.
So I went through the firmware: Metis_Angelia_Protocol_2_v12.1.8(1) (the only stable version for me on my Anan 100D version)
And I am using Thetis 2.10.3.8
After about an hour with transmission and reception passages with 50 to 70w, I found myself having connection problems with thetis.
I noticed that the two red LEDs on the front of the Anan 100d were really less bright, as were the LEDs on the network card. you have to wait two to 3 hours without the Anan being turned on for normal operation to return and then the problem starts again.
I measured the 3.3V voltage of the ATX connector.
With no load and not connected I am at 3.3v
connected ON mODE to the Angelia card I measure 3.14v
and when the problem occurs (red LED and network LED half lit) I gradually go from 3.15 to 3.3v.
My first question: is it normal to go from 3.3v to 3.150 when Thetis is launched in rx mode ?
My second question, would the 4A ptc fuse that I replaced be sensitive to the heat of the card to the point of increasing its resistance?
And how long does it take for a ptc fuse to return to the normale condition ?
My third question: we find the schematics of the Angelia card ant the amplification part with the filters, but I have not managed to find the interface with shielding which transforms the 13.8v into 12v 5v and 3.3 volts...

Thank you for your feedback, 73

Thierry

[w-u-2-o]

Interested in switching to protocol 2, I decided to replace the PTC fuse with a 4A PTC fuse.

What part number did you install?

[Thierry]

Hello Scott,

I took the reference you mentioned "1210L450SLWR" from Littelfuse.

For information, I also downgraded the Angelia card to a firmware in protocol 1 which consumes less current, and I had the same problems.

Thierry

[w-u-2-o]

It certainly seems like a hardware problem of some sort. And, as you mention, something that is associated with the thermal condition of the hardware.

Unfortunately I do not have good information on normal and abnormal power supply voltages. Nor do I have the schematic for the switching power supply board. However, AFAIK that board is a catalog part. If you see a part number try searching for data on the internet.

I'm assuming those voltage measurements are at points downstream of the PTCs?

The data sheet for the PTC, which you can easily find on the internet, does not provide any specification for reset time, which is dependent on how quickly the part cools off once power is removed.

One possibility is that the PTC was damaged during solder assembly. Another is that it has become degraded due to excessive cycles. One way to determine this would be to wait for the problem to happen, then use some cold spray (aka freeze spray, even an upside can of "air duster" will work) to quickly cool the part. Then cycle power and see if the unit is operating properly. If so, then the culprit is that PTC.

[Thierry]

Hello Scott,

And thank you for your answer, I removed the ptc fuse and I placed a shunt.
I did not have time because of my work to test the Anan 100D for a long time.
I will test this weekend, and I will keep you informed.

Thanks again Scott,73

Thierry

[Thierry]

Hello Scott,

I took the time to test the Anan 100d in its new configuration, and there are no more problems.

So it was indeed the fuse that was causing the problem.


Thanks again,73

Thierry