Strange

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8 months 3 weeks ago #9976 by Peanut13
Strange was created by Peanut13
I have a modular rev3 with in-14 tubes when I updated the clock would not work with the 74141 chip that I always use but works with the Russian equivalent as the clock is working no panic but would love to know why thanks

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8 months 3 weeks ago #9977 by BS_Jim
Replied by BS_Jim on topic Strange
Maybe ESD got your 74141. Just a guess.
Jim

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8 months 3 weeks ago #9978 by Peanut13
Replied by Peanut13 on topic Strange
Sorry should have said tried two different 74141 chips unless I managed to kill two chips

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8 months 3 weeks ago #9984 by BS_Jim
Replied by BS_Jim on topic Strange
Sorry. It was just a wild guess. I really don't know the electrical differences between a 74141 and a K155ID1. I would think that a 74141 should work in the circuit.

Jim
The following user(s) said Thank You: Peanut13

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8 months 3 weeks ago #9985 by Ty_Eeberfest
Replied by Ty_Eeberfest on topic Strange
Let me see if I understand the situation.

Clock was working (with 74141)
Updated firmware
Clock stopped working
Changed 74141 to a K155
Clock works again

Is that correct? If so, I have no idea why that would happen!

Look into it later when the dust is clearing off the crater.

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8 months 3 weeks ago #9986 by Peanut13
Replied by Peanut13 on topic Strange
Yes that is exactly what happened all I can think of is when the clock stopped working I changed the chip for one from a new batch I can't have so much bad luck that I killed a chip and the new ones are dud

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