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Beomaster 2400 touchpad issue - it's not working, pins are touching!!!

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Irata
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Irata posted on Sat, Jan 28 2017 3:49 PM

ok guys, I need some help please.

i just completed a full cap and lamp replacement from Martin. I also did the 2 large caps, and that seems to have remedied my muffled channel issue. 

Now the problem. 

When I install the touchpad panel, none of the "buttons" work. I've taken it apart and reinstalled everything multiple times. Quadruple checked that all pins are aligned and touching. 

All inputs are functional and switchable with the remote. All inputs are functional and switchable when I use my finger, or touch the "fork" that rests against the pin with a screwdriver. 

I have two functional 2400s, so I swapped touchpad panels. Both work exactly as they should on the other one, but neither function on this one. 

WHAT AM I MISSING?

is there anything else that makes this function other than a strictly mechanical connection between the forks and the pins?

I feel like I'm going insane. 

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Irata
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Irata replied on Sat, Feb 4 2017 9:44 PM

All three connectors are definitely seated correctly. I don't see any visible shorts or broken connections. 

All 5 tuner dials increase in voltage when I go up, and decrease in voltage when I go down. 

Irata
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Irata replied on Sat, Feb 4 2017 10:45 PM

I've swapped out the upper PCB boards too, and they both work on the working 2400, and both don't on this one. So the issue must reside on the main board somewhere. Been looking for loose connections without any luck.

Irata
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Irata replied on Sun, Feb 5 2017 1:17 PM

BACK IN BUSINESS!!!

After taking the 2400 mostly apart again, the red wire pulled away from the tuner box. There was my loose connection!

Resoldered it back in and the tuner came back to life!

Now I'm off to go put it together (AGAIN) and give those speakers some use.

Thanks for listening and giving advice guys!

Irata
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Irata replied on Sun, Feb 5 2017 2:24 PM

Here it is, just in time for a Led Zeppelin weekend.

For my first non-speaker electronics project, I sure picked a doozy to learn on. Trial by fire I say.

Beautiful machine though, couldn't pass it up.

I feel like this is how the design process went:

Engineer: "Hey, if we made the cabinet taller, I could move the --"

Jacob Jensen: "No -- You make it thinner."

Søren Mexico
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Irata:

Engineer: "Hey, if we made the cabinet taller, I could move the --"

Jacob Jensen: "No -- You make it thinner.", I want it flat, flat, flat, use your fantasy or a hammer

Enjoy the musicYes - thumbs up

 

Collecting Vintage B&O is not a hobby, its a lifestyle.

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