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SK-188 Mhz LED Display Help

C

cb2000

Member
Joined
Jul 12, 2018
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Location
Australia
Hi, Just wondering if anybody has the jumper settings instructions for the SK-188 Mhz LED display? I can't find anything online with my searches

20180721_104408.jpg
 
Those LED modules are usually custom jobs for a case or series of cases. Those two rows of jumpers either change the segment or change the number. You need to take a good picture or draw out a diagram of the current jumper configuration, and then pull them all and start experimenting. One row is likely for turbo on speed, the other is likely for turbo off speed.
 
This is something I never wasted any time on. If the settings were not available to me I wouldn't try to guess and waste lots of time hoping to get lucky. The display has very little or even no worthwhile meaning in most cases.
 
The diagrams at [here] show that the makers of these LED units were very consistent in their implementation; a jumper for each segment, of four possible settings. Once you see the pattern, you may be able to figure out the specific settings for your unit.

But, based on the diagrams that I pointed to, and on the SK-188 photo that you provided, I deduce that the SK-188 settings are per the diagram at [here]. Is the diagram correct?
 
Stone said:
This is something I never wasted any time on. If the settings were not available to me I wouldn't try to guess and waste lots of time hoping to get lucky. The display has very little or even no worthwhile meaning in most cases.
Click to expand...

I know it's not important and meaningless, but, this is what I grew up with as a kid and I have a bad case of nostalgia for these systems. So, I want it to be somewhat accurate, either 'hi' 'lo' or a number that is approximate.

modem7 said:
The diagrams at [here] show that the makers of these LED units were very consistent in their implementation; a jumper for each segment, of four possible settings. Once you see the pattern, you may be able to figure out the specific settings for your unit.

But, based on the diagrams that I pointed to, and on the SK-188 photo that you provided, I deduce that the SK-188 settings are per the diagram at [here]. Is the diagram correct?
Click to expand...

That's it! Thank you so much modem7. I was checking over the site using this http://minuszerodegrees.net/led_speed_display/led_speed_display.htmhttp:// and couldn’t see anything about the SK-188. Thank you again for finding (or making) that for me :)

Also, does anyone know if you can safely fiddle with the jumpers when the system is powered on?
 
Modem7, there are 2 changes that are required for the diagram you posted. the green jumpers all buy themselves need to be moved to start of bottom row and then the jumpers in the position of the green ones need to be turned into the hundreds. Mind you I haven't tried moving the jumpers yet, but, for the current numbers displayed it all seems to match up.

LED display - SK-188.jpg
 
cb2000 said:
Also, does anyone know if you can safely fiddle with the jumpers when the system is powered on?
Click to expand...
Not a problem at all.

cb2000 said:
Modem7, there are 2 changes that are required for the diagram you posted. the green jumpers all buy themselves need to be moved to start of bottom row and then the jumpers in the position of the green ones need to be turned into the hundreds. Mind you I haven't tried moving the jumpers yet, but, for the current numbers displayed it all seems to match up.
Click to expand...
So, per [here] ? (You may need to refresh the image in your browser.)

BTW. That is what I originally thought, but I then counted 16 solder joints for the segment module, which is the norm for two 7-segment units.
 
modem7 said:
Not a problem at all.


So, per [here] ? (You may need to refresh the image in your browser.)

BTW. That is what I originally thought, but I then counted 16 solder joints for the segment module, which is the norm for two 7-segment units.
Click to expand...

Yep, looks perfect now. Thank you so much again. I still haven't physically changed the jumpers to confirm, but, will let you know when I do. Hopefully, that will be sometime this week.
 
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