Dale Earnhardt edition COBRA 29 Audio IC

[Alabama Trainman]

Just picked up a really nice Earnhardt edition that is missing its 10 pin audio IC. What comes in this model a TA7222AP or a KIA7217AP ?
Anybody know for sure?

 

[999]

YD1022 AMPLIFIER Datasheet pdf - AUDIO AMPLIFIER. Equivalent, Catalog

WuXi YouDa Electronics YD1022 | AMPLIFIER. YOUDA INTEGRATED CIRCUIT YD1022 10W AUDIO AMPLIFIER—YD1022 DESCRIPTION The YD2030 is a monolithic .

datasheetspdf.com

 

[999]

IC4

https://www.cbtricks.com/radios/cobra/29ltd_chr/graphics/cobra_29ltd_chr_sch.pdf

 

[Alabama Trainman]

IC4

https://www.cbtricks.com/radios/cobra/29ltd_chr/graphics/cobra_29ltd_chr_sch.pdf

Wow, never thought of that one. I appreciate ya 999. Going to have to see if I have a YD1022. Lucky I asked..lol. thanks again!

 

[Alabama Trainman]

Well, I soldered in a brand new YD1022. As soon as I turned the radio on, the audio IC smoked. I then removed that and installed a TA7222AP. I now have modulation. This is a AUG 03 build. Just wanted everyone to know if they ever ran into this situation. The audio circuit has not been modified.

 

[999]

Well, I soldered in a brand new YD1022. As soon as I turned the radio on, the audio IC smoked. I then removed that and installed a TA7222AP. I now have modulation. This is a AUG 03 build. Just wanted everyone to know if they ever ran into this situation. The audio circuit has not been modified.

interesting.

 

[999]

Well, I soldered in a brand new YD1022. As soon as I turned the radio on, the audio IC smoked. I then removed that and installed a TA7222AP. I now have modulation. This is a AUG 03 build. Just wanted everyone to know if they ever ran into this situation. The audio circuit has not been modified.

Here is the schematic for the 1998 build, which most likely is the revision you are working on. Sorry for the bad information.

https://www.cbtricks.com/radios/cobra/29ltd_29ltd_st_29wx_st/graphics/cobra_29ltd-st_29ltd_sch.pdf

 

[Handy Andy]

On the board itself is a marking...

Near centerline - just below where the speaker cone rests...

Kinda looks like this...



The KEPC number helps to show which IC is what in there.

IN this case the above is a 255 board, and is of an earlier vintage - about 1997

So, it would use the TA7222AP chip - but you figured that out already, I'm just putting this here to help others in the future - to know where to look and what to expect.

You did the rest!

Good job!