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Author Topic: Can anyone spot a date code?  (Read 1446 times)

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Offline mobochTopic starter

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Can anyone spot a date code?
« on: December 16, 2019, 10:49:22 pm »
Hi I was curious when my function generator from eBay was manufactured. I attached a photo of the main PCB and already looked for Datecodes myself, but I highly doubt that it was made in 56 or even 47. Anyone seeing a more plausible number?
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Offline bitwelder

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Re: Can anyone spot a date code?
« Reply #1 on: December 17, 2019, 09:29:11 am »
The big electrolytics sometimes have a date code as well. Did you check them?
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Offline envisionelec

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Re: Can anyone spot a date code?
« Reply #2 on: December 19, 2019, 08:31:38 pm »
Mid 1980's judging by the PCB construction and ECAD software which was probably a Protel type.
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Offline Clarmrrsn

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Re: Can anyone spot a date code?
« Reply #3 on: December 19, 2019, 09:43:45 pm »
Just curious but what make + model is said device?
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Offline StillTrying

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Re: Can anyone spot a date code?
« Reply #4 on: December 19, 2019, 10:29:49 pm »
Can't see a date, I'd wild guess around 1978.
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.  That took much longer than I thought it would.
 

Offline sorenkir

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Re: Can anyone spot a date code?
« Reply #5 on: December 20, 2019, 10:38:30 am »
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Offline mobochTopic starter

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Re: Can anyone spot a date code?
« Reply #6 on: December 20, 2019, 02:22:24 pm »
sorenkir ist right! I'm impressed! From where did you know that?
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Offline White Rabbit

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Re: Can anyone spot a date code?
« Reply #7 on: December 22, 2019, 04:28:20 pm »
Oh, yes, I can see soviet resistors (red and gray colours) and keys switch station! (sorry my bad English, I am newbie).
Switch is  not bad, but he has  silver plated contacts, they could be coated with oxide. I always use silicon grease after cleaning contacts with alcohol or solvent.
Silicon grease will protects silver from air.
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Offline mobochTopic starter

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Re: Can anyone spot a date code?
« Reply #8 on: December 22, 2019, 05:56:17 pm »
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Offline Clarmrrsn

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Re: Can anyone spot a date code?
« Reply #9 on: December 23, 2019, 11:41:47 pm »
Cant seem to get your link to work.

Or is it just my Ipad playing funny beggers??
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Offline StillTrying

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Re: Can anyone spot a date code?
« Reply #10 on: December 24, 2019, 01:23:25 am »
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.  That took much longer than I thought it would.
 

Offline mobochTopic starter

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Re: Can anyone spot a date code?
« Reply #11 on: December 24, 2019, 07:37:40 am »
It seems to work fine for me?
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