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VIBROGRAF M 700 LED SCALE

JerseyMo
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JerseyMo Distinguished Member

JerseyMo

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well, given my curisolity and the fact that I was once a "pinball wizard" I had to have a look inside this device.  Sure enough just as I thought there was a chance that something on the power supply was not quite right.  This volatge regulator was broken off the board. UA78M12HC F7911 - 12V bipolar 3 pin.   $14.00 on ebay :)  will do some voltage testing before I order it.  So about the "pnball wizard" - long story short is I was the lead technican for an amusment company for 10 years.  1980 - 1990.  It was an assistent directory at Columbia University that gave me the nickname of "JerseyMo".   

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AndyHull Distinguished Member

AndyHull

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Interesting. Do you have any better images of the boards that show the IC part numbers?

Is that device  heatsinked on the case next to the power board another regulator or a power transistor?

Any date codes on those chips?

Is it a mix of analog and digital or all analog?

What does that long steel roller at the front do?

 

Edited by AndyHull
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JerseyMo Distinguished Member

JerseyMo

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9 hours ago, AndyHull said:

Interesting. Do you have any better images of the boards that show the IC part numbers?

Is that device  heatsinked on the case next to the power board another regulator or a power transistor?

Any date codes on those chips?

Is it a mix of analog and digital or all analog?

What does that long steel roller at the front do?

 

no more pics, as I have put this back together and will listings it fr sale  "AS IS".

yes, that is another regulator and I'd say it was the 5v.  

did not look for date codes.  all digital that roller is just part of the display assembly.  

Was a fun porject and I was happy with the result and even more that I was able to remember the bascis of the electronics related to the power supply. :)

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Timesense New Member

Timesense

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On ‎12‎/‎6‎/‎2019 at 1:42 PM, JerseyMo said:

no more pics, as I have put this back together and will listings it fr sale  "AS IS".

yes, that is another regulator and I'd say it was the 5v.  

did not look for date codes.  all digital that roller is just part of the display assembly.  

Was a fun porject and I was happy with the result and even more that I was able to remember the bascis of the electronics related to the power supply. :)

Hi , Came across this post today ,  Where have you listed it, can I get the reference.

Rgds

Anton

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Timesense New Member

Timesense

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Sorry Guys, 

I am  located in Germany.  Enjoy Measurement instruments related to  Time and Frequency Systems and have dabbled with the usual timers, hence keen to keep in touch with this topic. Not a watch Tech myself but more into electronics for daily bread.

Just joined up, & received the  email abt Forum rules. no reference to any commercial activity. How may I contact you  Jersey Mo. I believe a personal link for contact is allowed.

Nice to be here.

 

 

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JerseyMo Distinguished Member

JerseyMo

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More pictures of inside.   I just now notice all of the ITT components. They had a huge facility on route 3 East, a few miles from where I now work.  The location has recenlty been converted to a shopping mall.  

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JerseyMo Distinguished Member

JerseyMo

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On 6/28/2022 at 11:44 PM, JayMcleran said:

Did any of you guys ever find a manual for one of these. I just purchased one myself and would be willing to pay for a copy of a manual if someone has one.

 

Thanks Jay

*****@*****.tld or

*****@*****.tld

no

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JohnR725 Distinguished Member

JohnR725

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On 3/17/2023 at 12:01 PM, southwesttimers said:

 I don’t know if it is acceptable  on this site to respond.

It would be acceptable if it was a PDF and preferably not a super huge file size. Just on the rare cases somebody actually makes it here to find the discussion.

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