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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc.

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Old 16th May 2024, 12:41 am   #1
thespeakerport
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Join Date: May 2024
Location: Joliet, Illinois, USA.
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Default Akai 4000DS and the LD3141 Chip

Hello all....just signed up to this forum. Lots of good information here.

I am based outside of Chicago, IL and have a vintage audio repair and restoration shop. What lead me here was a post that was made by KeithsTV in regards to the Akai 4000DS and the issue with the LD3141 chip. I followed the schematic and instructions, but I was wondering if anyone has also built this and what did you do with pin number 5? There is no mention of how to account for it. It is definitely connected to circuitry in this unit and it does not seem right to just ignore it. I have yet to actually install the new board, but before I do, I was hoping to get some guidance.

(Note: i tried to reach out directly to the original author, but apparently i had to make a post first...lol)
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Old 16th May 2024, 10:29 am   #2
DMcMahon
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Default Re: Akai 4000DS and the LD3141 Chip

Hello and welcome to the Forum.

I assume this is the Thread in question :-

https://www.google.com/url?client=in...074lg0gW&arm=e


David
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Old 16th May 2024, 11:14 am   #3
KeithsTV
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Default Re: Akai 4000DS and the LD3141 Chip

I assume you are referring to pin 5 on the LD3141. With the replacement circuit there is no need to connect anything to pin 5. In the original circuit it is connected to a decoupling capacitor. This is not needed in the circuit I designed.

Keith
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