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Re: r 151 accent resistor burns
Posted: Jun 9th, '14, 11:11
by gihaume
What is the brand of your new 4011BE that solved the issue?
The reseller I want to buy have Texas Instruments ones.
Re: r 151 accent resistor burns
Posted: Jun 10th, '14, 01:59
by krisbo
National Semiconductor. I can't imagine TI would be an issue though.
Re: r 151 accent resistor burns
Posted: Jul 3rd, '14, 17:36
by maurice
Same here, it works on first try, but R151 is smelly and black now, and if I turn accent knob up it lowers master volume
I think I am from the last batch but mine says 4011BE
the sound of the rest is great
Re: r 151 accent resistor burns
Posted: Jul 5th, '14, 15:09
by gihaume
I will receive some UB and BE TI's 4011s on Tuesday-Wednesday and so will be able to change it. I will let you know if it well correct the problem.
Re: r 151 accent resistor burns
Posted: Jul 8th, '14, 08:15
by gihaume
Success!!!
Maybe the problem was the heat applied to the chipset during the soldering because this time I put a
socket between it and the PCB
Re: r 151 accent resistor burns
Posted: Jul 18th, '14, 23:51
by guitarsucks
I can also confirm that with the supplied CD4011BE chip for IC6 in the Accent section, R151 smoked and burnt. As recommended by keen I changed the chip to UB(E) version and now all is well. Solved 151 problem as well. The chip I put in is : Texas Instruments - CD4011UBE
Thanks a bunch for the info.
keen wrote:Hello franzkleid,
I had same problem on 4th batch kit.
Please try unbuffered 4011UB.
I solved R151 problem by it.
cheers
Re: r 151 accent resistor burns
Posted: Jul 19th, '14, 15:53
by ikke
What's the batch production code of these malfuctioning ic's?
It would be good to know so we can spot them in advance.
Re: r 151 accent resistor burns
Posted: Jul 20th, '14, 01:27
by guitarsucks
The batch/date code on the texas instrument CD4011BE that came in my yocto kit is 10HMAND. Hope that helps. cheers
Re: r 151 accent resistor burns
Posted: Jul 28th, '14, 15:55
by jeroenbvo
Success,
I had the same issue with R151. I also had a 4011BE from the 10HMAND batch. Replaced by a 4011UB and its rocking now.
Re: r 151 accent resistor burns
Posted: Sep 19th, '14, 23:36
by Jim Galam
I think it is a batch of bad chips. I was having similar problems such as Bass drum diassapearing when I tiurned the accent up and a few other weird things. My kit came with texas instrument CD4011BE code 10HMAND. I replaced it with a texas instruments CD4011BE that I had on hand and everything works. I did not have resistor burn.