Identifying Broken Connections on an Extensional Viscosity Measuring Instrument

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What is this component in the middle with the two broken connections? It is on an instrument for measuring extensional viscosity that is not working. It looks like a power amp and a wire wound resistor on the same board got real hot. Don't know if there is any relationship to the two broken connections pictured.
 

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phinds said:
It's a fuse chip with four fuses, two of which have blown
Thank you very much! However, I am having a heck of a time finding similar parts on the internets. Do you have any suggestions on where to find it or how to search for it?

Regards,
Lucas
 
watson.894 said:
Thank you very much! However, I am having a heck of a time finding similar parts on the internets. Do you have any suggestions on where to find it or how to search for it?

Regards,
Lucas
Really? What did you try? Googling for "8-pin fuse chips" got a TON of hits
 
phinds said:
Really? What did you try? Googling for "8-pin fuse chips" got a TON of hits
What Daz posted looked like an exact match. If it was a fuse, would the top blow off like that?
 
A Dil jumper was used as a low-cost alternative for a DIP switch. They were used for configuration settings that aren't expected to change after manufacture. You plug (or solder) the thing in and then punch or snip the straps as required.
 
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very doubtful that it is a fuse.. it would be hard to make accurate current control in that structure
I believe that it t is a programable ( well one time) jumper block.
A cheaper version of a DIP switch
 
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watson.894 said:
What Daz posted looked like an exact match. If it was a fuse, would the top blow off like that?
I assumed that it was topless so the fuses could be replaced, but it could be, as others have suggested, a jumper chip. If it IS a jumper chip then something REALLY drew too much current.EDIT: yeah, now that I look, I don't see any "topless" fuse chips so I guess it must be a jumper chip that really got overloaded.
 
CWatters said:
Is it possible those two jumpers were cut at the factory when it was made?
The plastic looks melted under the two broken links, so that suggests probably not.
 
phinds said:
EDIT: yeah, now that I look, I don't see any "topless" fuse chips so I guess it must be a jumper chip that really got overloaded.

no, specific jumpers are cut to provide a certain function
and when used in this fashion, jumpers can always be rejoined and other combinations cut

I have used this method often in PLL radio systems where I want to set the n=counter number to give the correct frequency

there are many other uses :smile:

Dave
 
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davenn said:
no, specific jumpers are cut to provide a certain function
and when used in this fashion, jumpers can always be rejoined and other combinations cut

I have used this method often in PLL radio systems where I want to set the n=counter number to give the correct frequency

there are many other uses :smile:

Dave
Oh, it looked to me like a blown fuse. Guess you're right, though.
 
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phinds said:
Oh, it looked to me like a blown fuse. Guess you're right, though.

a trap for young players :wink::-p ( tease, tease knowing you are my senior )
 
hahaha --- one needs a sense of humour to survive this world
Thanks buddy :smile:

Friday is here and it's time to go home from the salt mine yipeee

here's part of one totally wrecked bit of gear I dealt with today ... $15,000 GPS receiver very wet and corroded
you can still see the water droplets on those ribbon cables

DSCF5965sm.JPG
 
I assumed they were programming jumpers and were opened with a hot soldering iron.
 

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