MMS 5650 missing Center Fix

Hello world!

I read never really many on the Dell forums, but I want to share something with everyone in hopes of helping someone, I discovered.

Recently, my neighbor, who I do a good bit of work at the computer, went to a yard sale and bought a system MMS 5650. She bought thinking it was a computer! Again, however, I was working on his computer that night and told him it was not a computer, but it is rather a speaker system. She said that she couldn't use it, so she gave it to me.

So I get home and I'm looking on it, to realize that missing a center speaker. After some research, I learned that the center speaker feeds the whole system with its switch on / off. However, being as curious as I am, I opened the subwoofer bass/receiver to do tests. After a while of wire tracing, I decided to try jumpers on some pins. Hey, no center speaker, so if it is fried, it fried.

I realized that the on / off switch circuit had to do with the DB9 connector on the back of the unit. I spent some time to place a wire on several pins with no luck. Then, suddenly, the whole system came to life only to falter to silence, literally. This brings to mind a potentiometer, or wheel to control volume, must be on the center speaker.

This means that there must be another set of pins that needs a rider. Then, I tested a bit more and found that the PIN was right next to the first two. It is such an easy solution!

Here's how to fix it: put a thread on pins 2 and 7 and another wire on pins 3 and 8. This creates the circuit and the powers on the system. Optional: I did my riders in an old series extension cable to tinker more easily.

He seems to pin 6 has some amount of tension to this topic, but I have no idea how. This leaves 4 that pins open, right? Fix. One thing to note is that the grounding is done through the screws on the original DB9 plug. So, in theory, the other 2 pairs of pins to go to two separate speakers, i.e. inside the center speaker!

It shouldn't be difficult to find what areas focus the audio, and then I'm going to attach a headphone jack of 3.5 mm on each that will then be linked to a set of speakers left from an old computer. You could exchange the plug for headphones with RCA plugs depending on your situation.

This concludes how to fix your MMS 5650 home theatre system. Feel free to ask questions and make suggestions. The difficulty of the ultimate amateur, go to radioshack and get a male DB9. Weld the two pins necessary sets and fix your catch in a pretty box also available here. Nice and clean!

Not bad for an amateur teen, huh?

Hello

Not bad, but I have a different pin

I was looking for the same solution for my Center speaker is also absent.

As I found nothing on the internet, so I took the bass part, a little behind all this engineering.

Here's what it looks like on my end of the world:

pins 1, 2 are shorted and the center speaker on (+)

PIN 5, 9 are also shorted and also for the center speaker (-) (I'm not sure of the +/-thing)

PIN 4, 6 connect these (power)

pin 3 connect a potentiometer (out / wiper)

PIN 7 potentiometer (Terminal 1)

PIN 8 potentiometer (terminal 2)

When I tried with a 100K potentiometer, it was too big, could not turn down the volume. It is probably a 10K, because the system has its own volume control ic.

So here it is, hope I helped for all the jokers (like me) who doesn't have enough money to buy a new system.

Peace

Jim the HUN :D

Tags: Dell Desktop

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