MTCD - Swap Radio Module TDA7706 for TDA7786 - MTCD Android Head Units Q&A

Hi,
Currently I have the TDA7706 for FM reception and I find the reception very bad, even with an antenna powered by 12 volts.
I would like to know if I can make a swap between the TDA7706 and the TDA7786 on my MTCE KGL unit ? (my mcu is a KGL v2.80 and i have a PX3 proc)
Looking at the schematics for the 2 TDAs, I noticed that there is no difference. I wanted to know if someone has already made this change ?
I also ask myself the following question :
- Should I change other parts to improve FM ?
- Will the MCU detect the new IC TDA7786 ?
Thank you for your help and excuse me for my english. I am French.
Regards.

bdomi40 said:
Hi,
Currently I have the TDA7706 for FM reception and I find the reception very bad, even with an antenna powered by 12 volts.
I would like to know if I can make a swap between the TDA7706 and the TDA7786 on my MTCE KGL unit ? (my mcu is a KGL v2.80 and i have a PX3 proc)
Looking at the schematics for the 2 TDAs, I noticed that there is no difference. I wanted to know if someone has already made this change ?
I also ask myself the following question :
- Should I change other parts to improve FM ?
- Will the MCU detect the new IC TDA7786 ?
Thank you for your help and excuse me for my english. I am French.
Regards.
Click to expand...
Click to collapse
See my thread in Hardware section. Modification is not worthwhile.

In your hardware section, you discuss the change between a TDA7786 and a TEF6686.
But I have a TDA7706 whose FM reception is rotten. RDS works poorly and FM sensitivity is very low.

Related

New HU with 7.1.1, bloody confused- need help!

Hi Guys,
I found a non-branded HU in aliexpress with RK3188 CPU and 2 GB RAM, an updated Amplifier IC 7851 and running android 7.1.1. This is the link- https://www.aliexpress.com/item/And...32812654291.html?spm=a2g0s.8937460.0.0.RS7tIA
I am planning to get this one, I was closely following the XDA threads on Androind HU for some time. I got a plethora of info, but I still need to clear up some doubts, hopefully you guys can help me to get my doubts cleared. Please let me know if my understanding below are right:
(1) If one is not so worried about the technical support then branded non-branded HU doesn't matter right? As far as I understood, the internals are same for most of the HU. For e.g. there will be many brands coming out with the same spec as above, 2 GB RAM, RK3188 (PX3) CPU and the firmware can be cross flashed? Or atleast we can flash the malaysk rom irrespective of the Brand/Vendor, if the internals are the same?
(2) If there is something that is going to differ that would be the MCU (and yes screen resolution). Am I right? However, we can flash Malaysk rom irrespective of the MCU?
PS: I am rooting and flashing ROMs since the Samsung Galaxy S2 days, but Android HUs are a little different so I thought- "When in doubt, ask"!
Thanks in advance, guys! Please let me know anything else I should be taking into consideration before buying the above mentioned HU.
Cheers,
Rahul U S
Guys, your response is much appreciated. I just want to be sure, so asking.
Cheers,
Rahul U S
The unit you linked to is pretty much the same as the one being discussed here,
https://forum.xda-developers.com/an...t/dasaita-android-7-1-1-headunit-px3-t3588871
You would probably get more support going forward if you went with the PX5 octa-core version.
Topfar said:
The unit you linked to is pretty much the same as the one being discussed here,
https://forum.xda-developers.com/an...t/dasaita-android-7-1-1-headunit-px3-t3588871
You would probably get more support going forward if you went with the PX5 octa-core version.
Click to expand...
Click to collapse
what support?
PX3 has 2 custom ROMs (malaysk & hal9k), plenty of mods, xposed support, etc...
PX5 has 1 custom ROM (only malaysk's, but with half of the features available on PX3 version)
Intel Sofia has no custom ROM
go figure...
@s.rahus: go for it. 2GB ram is a winner and upgraded TDA7851 is the cherry on top.
not sure if malaysk's 5.1 rom can be flashed on this 7.1.1 unit and yes, has nothing to do with MCU, that needs to be vendor specific.
Thanks much, guys!
Well, that seller is not responding at all, I would probably go with the below one. Anyway, the brand really doesn't matter. So I am trying to find a seller who responds well and something that is reasonably priced.
Wholesales! Android 7.1.1 7 Inch Car DVD Player For VW/Golf/Tiguan/Skoda/Fabia/Rapid/Seat/Leon/Skoda CANBUS Wifi GPS Radio
http://s.aliexpress.com/aq6VFj2e
(from AliExpress Android)
Cheers
Rahul U S
s.rahus said:
Thanks much, guys!
Well, that seller is not responding at all, I would probably go with the below one. Anyway, the brand really doesn't matter. So I am trying to find a seller who responds well and something that is reasonably priced.
Wholesales! Android 7.1.1 7 Inch Car DVD Player For VW/Golf/Tiguan/Skoda/Fabia/Rapid/Seat/Leon/Skoda CANBUS Wifi GPS Radio
http://s.aliexpress.com/aq6VFj2e
(from AliExpress Android)
Cheers
Rahul U S
Click to expand...
Click to collapse
Pick another one, this one doesn't have upgraded amp chip, it's still a 7388.
No need for 7.1.1, find a good one with 6 or even 5.1
zerozoneice said:
Pick another one, this one doesn't have upgraded amp chip, it's still a 7388.
No need for 7.1.1, find a good one with 6 or even 5.1
Click to expand...
Click to collapse
Hey, thanks for spending time and helping me out man, really appreciated. However, I could find just that seller with 7851 and he/she is not responding at all. If you find one with 7851, please let me know. I need the similar to OE looks and would love to have the android 7.1.1.
Cheers,
Rahul U S
zerozoneice said:
Pick another one, this one doesn't have upgraded amp chip, it's still a 7388.
No need for 7.1.1, find a good one with 6 or even 5.1
Click to expand...
Click to collapse
Found one with IC 7850. From what I read 7850 and 7851 are same. Check this out and please let me know what you think- https://www.aliexpress.com/item/4-C...32691433062.html?spm=a2g0s.8937460.0.0.73gTna
Cheers,
Rahul U S
s.rahus said:
Found one with IC 7850. From what I read 7850 and 7851 are same. Check this out and please let me know what you think- https://www.aliexpress.com/item/4-C...32691433062.html?spm=a2g0s.8937460.0.0.73gTna
Cheers,
Rahul U S
Click to expand...
Click to collapse
sure
zerozoneice said:
sure
Click to expand...
Click to collapse
Hey bud, I am going with this one. It seems to have a better Radio IC chip as well, which claims to give a better radio reception than the TDA 77xx.
Cheers,
Rahul U S
s.rahus said:
Hey bud, I am going with this one. It seems to have a better Radio IC chip as well, which claims to give a better radio reception than the TDA 77xx.
Cheers,
Rahul U S
Click to expand...
Click to collapse
There are no 'better' tuner or amp ICs in these, the better is so insignificant its not worth worrying about. If you want the best audio amplification, use external amps. Regarding the tuner, you can install an RF amp at the antenna, but that doesnt overcome the shyte selectivity of these units. Best have a decent antenna and accept the hit-or-miss quality of the tuner.
I suggest buying a HotAudio, witson, joying or xtrons as they atleast have some support, even if second rate compared to major brands.
s.rahus said:
Hey bud, I am going with this one. It seems to have a better Radio IC chip as well, which claims to give a better radio reception than the TDA 77xx.
Cheers,
Rahul U S
Click to expand...
Click to collapse
yes, 6686 it's said to have better reception esp. in low signal areas. good luck
zerozoneice said:
yes, 6686 it's said to have better reception esp. in low signal areas. good luck
Click to expand...
Click to collapse
Thanks much mate!
Cheers,
Rahul U S
marchnz said:
There are no 'better' tuner or amp ICs in these, the better is so insignificant its not worth worrying about. If you want the best audio amplification, use external amps. Regarding the tuner, you can install an RF amp at the antenna, but that doesnt overcome the shyte selectivity of these units. Best have a decent antenna and accept the hit-or-miss quality of the tuner.
I suggest buying a HotAudio, witson, joying or xtrons as they atleast have some support, even if second rate compared to major brands.
Click to expand...
Click to collapse
Thanks! Valid point. I have heard that the support from the above brands too are nothing to write home about, however yeah some support is better than no support. Unfortunately, I cannot find the one I need with these brands. I am taking a chance and trying my luck. Let's see.
Cheers,
Rahul U S
s.rahus said:
Thanks! Valid point. I have heard that the support from the above brands too are nothing to write home about, however yeah some support is better than no support. Unfortunately, I cannot find the one I need with these brands. I am taking a chance and trying my luck. Let's see.
Cheers,
Rahul U S
Click to expand...
Click to collapse
MTCD is MTCD, they're all based on MTCD reference design with some minor differences. For context, I have a JY (originally px3 1GB) with latest HCT PX5 2GB and HA 2.56 MCU.
Regards,
Marc
Topfar said:
The unit you linked to is pretty much the same as the one being discussed here,
https://forum.xda-developers.com/an...t/dasaita-android-7-1-1-headunit-px3-t3588871
You would probably get more support going forward if you went with the PX5 octa-core version.
Click to expand...
Click to collapse
s.rahus said:
Thanks! Valid point. I have heard that the support from the above brands too are nothing to write home about, however yeah some support is better than no support. Unfortunately, I cannot find the one I need with these brands. I am taking a chance and trying my luck. Let's see.
Click to expand...
Click to collapse
@Topfar, as both RK3188/PX3 MTCD and RK3368/PX5 MTCD units are being made (including developing N for the RK3188/PX3 BEFORE the RK3368/PX5 gets it) then theres no reason to suggest that "support" is going to be better for the octacore ones, but basically the only support your ll get is from XDA, whatever MTC unit you buy.
zerozoneice said:
yes, 6686 it's said to have better reception esp. in low signal areas. good luck
Click to expand...
Click to collapse
Yes, I had an MTCB unit with the 7786 and then one with the 6686 and the 6686 is deffo better reception wise, wit a boosted antenna I get lots of stations.
s.rahus said:
Hi Guys,
I found a non-branded HU in aliexpress with RK3188 CPU and 2 GB RAM, an updated Amplifier IC 7851 and running android 7.1.1. This is the link- https://www.aliexpress.com/item/And...32812654291.html?spm=a2g0s.8937460.0.0.RS7tIA
Click to expand...
Click to collapse
That one has pics of MTCB/C SWC screen, not the MTCD one, guessing thats an error, unless theres N for MTCB/C coming, probabaly not, unfortunately.
Anyway, currently there are a few N ROMs for RK3188/PX3 but theyve been labelled as experimental, seeing as units with N are now actually on sale, a full N ROM for RK3188/PX3 cant be far away . . .
typos1 said:
That one has pics of MTCB/C SWC screen, not the MTCD one, guessing thats an error, unless theres N for MTCB/C coming, probabaly not, unfortunately.
Click to expand...
Click to collapse
Thanks for all your inputs, appreciated! I have decided to go with this one, with amp IC 7850 (same as IC 7851) and NXP radio IC. By the way, what do you mean by SWC screen (the physical key layout)?
Android 7.1.1 RK3188 4 Core 1.6G*4 Car DVD Player for Golf Polo Passat Tiguan EOS for Seat 2G RAM iNANDR Auto Stereo Radio RDS
http://s.aliexpress.com/F7VVF7zu
(from AliExpress Android)
Thanks,
Rahul U S
s.rahus said:
By the way, what do you mean by SWC screen (the physical key layout)?
Click to expand...
Click to collapse
The screen that shows the functions you can assign to the SWC is from an MTCB/B unit, see pic.
typos1 said:
The screen that shows the functions you can assign to the SWC is from an MTCB/B unit, see pic.
Click to expand...
Click to collapse
My guess is that they just edit and reuse the existing photos (of course superimposing the user interface). Have a look at the physical key layout as well, I think that too is not updated?
Will ask the seller anyway.
Thanks,
Rahul U S
s.rahus said:
My guess is that they just edit and reuse the existing photos (of course superimposing the user interface). Have a look at the physical key layout as well, I think that too is not updated?
Will ask the seller anyway.
Thanks,
Rahul U S
Click to expand...
Click to collapse
Yeah and its probably MTCD cos it has the launcher without the weather and with speed boost/amp//brightness etc.

What's wrong with this?

I recently changed the core board in my px3 unit to px5 and now it does this
https://youtu.be/ZLkrGwCiNgg
I've also lost Bluetooth and WiFi capabilities too
Anyone knows what's going on here?
Thanks in advance
Richard

Canbus Erisin on an Isudar radio?

I have a Isudar radio for my alfa 159 car.
I have read Erisin radio works perfect in a 159 car. Its canbus box is:
Erisin ZF001 Special CanBus Decoder Box wihtout cable for ES7431FB - Erisinworldwide
Check
www.erisinworldwide.com
I would like to know if a canbus box of one brand works for radios of other brands?
I have contacted the seller Erisin and they cannot guarantee it will work in others brands.
Thank you very much
Is it an MTCD. Good grief people.
marchnz said:
Is it an MTCD. Good grief people.
Click to expand...
Click to collapse
Yes, it is MTCD/E
My auto radio version is:
px3-userdebug 7.1.2 NHG47L eng.hct20180
MTCE_XRC_V2.80_1
2Gb/ 16Gb
Now I update mcu to HA 3.71, and I´m doing tests.
I have read this thread: https://forum.xda-developers.com/t/canbox-versions.3763383/
It is very very interesting

Android car radio soft update

Hello
I have an android radio in my Ford fiesta - first photo. It works fine but i want to upgrade soft in this unit. Do you know how to do that?
Second photo shows newest unit. It looks better. How to upgrade?
Ps. Px6
andrzejmirek said:
Ps. Px6
Click to expand...
Click to collapse
Is the unit an MTCD type or variant. Post answer with screenshot of mcu version.

Question Opinions about ISUDAR T72 Car Radio Android 10

Hi ! I have on my Kia Ceed JD an "old" PX5 from ZNY. It works just fine ... but maybe it's time for an upgrade.
What do you know about ISUDAR T72 player, 4/64 GB, based on "Pure Android 10.0 system UIS7862 octa-core processor" ? Has anyone had the occasion to test it ? Thanks !

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