I think my Comet is now dead

YorksMG2013 · 18th July 2020, 07:05

Morning All

My Navall Comet device seems to have given up the ghost.
Switch and the buttons illuminate (no screen).
The CD player will accept and eject a disc.
That's it.
I've tried pressing and holding the reset button for 1 second, 5 seconds, 10 seconds, but no change.

So I'm probably looking for a new unit.
Are there any good and reliable DD units out there?
I see Julian no longer does his units (which looked like the RadioGuy ones, but I gather were more reliable?)
Maybe I need to go mainstream brand?
Maybe it's time to go single DIN. It'd be nice to have a large screen still and I do have a reversing camera.
That said the basics are FM, DAB and CD player
Oh and the reception for BBC Radio 4 ranged from terrible to not bad (just Radio 4 - other channels were ok - strange!)

Any advice/thoughts much appreciated

Andrew

Teflon · 18th July 2020, 07:33

Before you right it off completely, you may want to disconnect the battery for half an hour or so (or just unplug the head unit). This has been know to clear some seemingly terminal faults with these units.

It may not work in your case, but can't hurt to try.

Cliff

Rogue · 18th July 2020, 12:41

Quote:

I see Julian no longer does his units (which looked like the RadioGuy ones, but I gather were more reliable?)
Maybe I need to go mainstream brand?

I think you will find they were idential units

Xtrons appear to be most popular and reliable units (Both sold by radioguy and julian!) and i have to say i've had no issues with mine and pleased with it.
This is the unit i purchased

https://xtrons.co.uk/bmw-various-and...gb-rom-pa7046b

Sjonnie · 20th July 2020, 16:57

Quote:

Originally Posted by Rogue

I think you will find they were idential units

Fortunately only the housing of the units and the front are identical. The firmware on the other hand is not the same. Each A-grade OEM bakes their own firmware so the unit does what they want them to do.

There are a zillion units that have the same look and feel but have different software, which actually makes all the difference.

Besides that... xTrons has a decent support team that's able to help in case of problems.

Rogue · 20th July 2020, 17:38

Quote:

Fortunately only the housing of the units and the front are identical.

Both Radioguy and Jubs ordered from the same supplier as i was informed by radioguy's uk agent in the last week or so and were identical units. He may be wrong but i doubt it.
Btw mine is an Xtrons unit supplied via Jubs.

ceedy · 21st July 2020, 08:08

try a much longer reset press 20-30 seconds, then reset again ..

or the xtrons reset ....... 20 secs , 3 secs , 1sec rst

C

mbonwick · 21st July 2020, 20:55

Quote:

Originally Posted by Sjonnie

Fortunately only the housing of the units and the front are identical. The firmware on the other hand is not the same.

This myth needs to be stopped.

The firmware is the same on both Navall and XTrons units. The customisation of the android build is however slightly different.
Although there's no concrete evidence, I'd strongly suspect that even though they come from the same supplier, XTrons units are the A-grade QC passes whereas Navall is B-grade.

Sjonnie · 22nd July 2020, 17:22

Quote:

Originally Posted by mbonwick

This myth needs to be stopped.

Evidence?

mbonwick · 22nd July 2020, 19:10

What is your evidence that they're different?

As to mine...
Plenty of posts over on xda-developers, plus some of my own personal research.Both brands of units run on MTCD and the later MTCE branch of firmware.

They've also debunked the myth that you need to de/resolder components on the PCB to upgrade a Navall 3.

YorksMG2013 · 26th July 2020, 11:43

OK so I tried a longer reset and then disconnected the car battery.
Neither option worked, so its time to replace with a major brand, perhaps Pioneer

Andrew

18th July 2020, 07:05	#1
YorksMG2013 Gets stuck in MG ZT 190 SE & MG ZT 260 Join Date: Oct 2013 Location: Leeds Posts: 854 Thanks: 95 Thanked 119 Times in 65 Posts	I think my Comet is now dead Morning All My Navall Comet device seems to have given up the ghost. Switch and the buttons illuminate (no screen). The CD player will accept and eject a disc. That's it. I've tried pressing and holding the reset button for 1 second, 5 seconds, 10 seconds, but no change. So I'm probably looking for a new unit. Are there any good and reliable DD units out there? I see Julian no longer does his units (which looked like the RadioGuy ones, but I gather were more reliable?) Maybe I need to go mainstream brand? Maybe it's time to go single DIN. It'd be nice to have a large screen still and I do have a reversing camera. That said the basics are FM, DAB and CD player Oh and the reception for BBC Radio 4 ranged from terrible to not bad (just Radio 4 - other channels were ok - strange!) Any advice/thoughts much appreciated Andrew __________________ Proud owner of a Pearl Black facelift ZT 190 SE (or should that be the 'Black Pearl'? Just call me Cap'n Jack!) Now joined by the Blue Beast - MG ZT 260 #57 in Trophy Blue

18th July 2020, 07:33	#2
Teflon This is my second home Lagoon 2.0 V6 75 Conn SE Saloon Join Date: Nov 2006 Location: Chertsey Posts: 5,201 Thanks: 2,825 Thanked 2,920 Times in 1,570 Posts	Before you right it off completely, you may want to disconnect the battery for half an hour or so (or just unplug the head unit). This has been know to clear some seemingly terminal faults with these units. It may not work in your case, but can't hurt to try. Cliff __________________ No. 4 of 6

21st July 2020, 08:08	#6
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,075 Thanks: 916 Thanked 1,214 Times in 768 Posts	try a much longer reset press 20-30 seconds, then reset again .. or the xtrons reset ....... 20 secs , 3 secs , 1sec rst C __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's

26th July 2020, 11:43	#10
YorksMG2013 Gets stuck in MG ZT 190 SE & MG ZT 260 Join Date: Oct 2013 Location: Leeds Posts: 854 Thanks: 95 Thanked 119 Times in 65 Posts	Dead Comet OK so I tried a longer reset and then disconnected the car battery. Neither option worked, so its time to replace with a major brand, perhaps Pioneer Andrew __________________ Proud owner of a Pearl Black facelift ZT 190 SE (or should that be the 'Black Pearl'? Just call me Cap'n Jack!) Now joined by the Blue Beast - MG ZT 260 #57 in Trophy Blue

22nd July 2020, 19:10	#9
mbonwick Gets stuck in Connoisseur SE 1.8 Auto Saloon Join Date: Jul 2015 Location: Kendal Posts: 633 Thanks: 129 Thanked 176 Times in 147 Posts	What is your evidence that they're different? As to mine... Plenty of posts over on xda-developers, plus some of my own personal research.Both brands of units run on MTCD and the later MTCE branch of firmware. They've also debunked the myth that you need to de/resolder components on the PCB to upgrade a Navall 3.