CRE-8900 Talkback Fix

[Lil'Yeshua]

Virgin soil. Where IC1 is located

 

[Lil'Yeshua]

When you prefer expresso
F22 Raptor - Takeoff and Vertical Climb - Melbourne Air Show - 2013 - YouTube
http://youtu.be/F-8RItOZE30
http://youtu.be/_PLq0_7k1jk
I just need to see how they did the fix on your radio M42Duster

 

[Lil'Yeshua]

Don't know if this is their fix or not.

Could you describe what kind of wire that is and the components under the blob?
Pin 2 already has a cap it's connected to. I'm wondering why the extra cap?

 

[Lil'Yeshua]

http://pdfdata.datasheetsite.com/pdf1/ST/TDA2003V.pdf
BUILT-IN PROTECTION SYSTEMS Load dump voltage surge
The TDA 2003 has a circuit which enables it to withstand a voltage pulse train, on pin 5, of the type shown in fig. 19.
If the supply voltage peaks to more than 40V, then an LC filter must be inserted between the supply and pin 5, in order to assure that the pulses at pin 5 will be held within the limits shown in fig. 18.

 

[Lil'Yeshua]

TDA2003V applications

 

[Lil'Yeshua]

TDA2003V typical application

 

[Mavrik]

m42duster still want to sell your cre 8900? You had mentioned selling once repaired.

 

[Lil'Yeshua]

Here's a close up of the area M42Duster's fix connection at the VOLC. I just need which trace to solder to.

 

[Lil'Yeshua]

2

 

[Lil'Yeshua]

VOLC pin 29 on U505

 

[Lil'Yeshua]

U505
VOLC is supposed to be where the fix's other end of the jumper is soldered to. Disclaimer:I'm still trying to figured out exactly where this fix's jumper goes too so don't take my word for it just yet.

 

[Lil'Yeshua]

TDA2003V
You'll have to look at the close up pic of the TDA2003V to see how the pins are soldered