• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Akai 4000DS and the LD3141 replacement

nabeelsayegh

nabeelsayegh

AK Subscriber
Subscriber
Hello all,

I have one of these with noisy LD3141 that I am in process of fabricating a replacement. There are a number of options including pre-build board that are supposed to be direct replacements. From what I have found, there are two solutions. One uses a pair of transistors and another using the TL072 op amp. I liked the idea of the op-amp which is fully discussed here:

Another alternative for Sanyo LD3141 - UK Vintage Radio Repair and Restoration Discussion Forum

Another alternative for Sanyo LD3141 Components and Circuits
www.vintage-radio.net

Now, my question is if anyone has implemented this solution and if so, what do you do about pin number 5? There is no mention of it in this at all. The transistor solution does account for pin 5 but leaving it not connected is not making me comfortable. Thoughts on this?
 
Register to hide this ad
I built my own using discrete components, but thought about using the TL072 design. I'll be curious to see how you make out with this. . . .

20230205_103114.jpgLD3141 Perfboard Layout.jpeg
 
Well....that TL072 did not work. Never got an answer about pin 5....was a hot mess. I made the board you had above....worked perfectly...THANK YOU! Would be great if we could get these boards fabricated with the pins already in place. I spent most of the time making the trace connections and pins than anything else. I replaced all 4 of the LD3141's and its sounds great now.
 
Sorry it didn't work out. I guess I'll stick with the other design in the future. There's a Tapeheads.net member from the UK who makes them and sells them on the auction site for a reasonable price. Have a. Look if you need more and don't want to DIY . . .
.
 
Here is a link to the eBay listing for the LD3141 replacement that Rich mentioned.

www.ebay.com

LD3141 Replacement PCB **Fully Assembled PCB ** . FINALLY a REAL solution . | eBay

Replace those failing, hard to get and WAY over priced LD3141 IC`s with these well made, fully tested and high quality PCB`s. The circuit design of this board uses IDENTICAL components to those used in the original LD3141 IC so there is NO loss of signal and NO change to the sound of the signal...
www.ebay.com
 
You must log in or register to reply here.
Back
Top Bottom