A screw fell into the little square hole that the plastic cover on sewing bed slides into! Is there a way to access inside machine to retrieve the screw. Baby lock symphony?

What is the Make & Model of your machine?

Sometimes, if you tilt the sewing machine the screw will work loose. Or perhaps a small magnet (like what mechanics have on an extending rod).

The button is a relay switch and is an electronic component

Quite easy to replace, but you need to get parts from Janome Authorised Dealer

http://www.brother-usa.com/VirData/Content/en-US%5CHAD%5CConsumer%5CUsersManual%5C1034D%20User%20Manual%20English%20Spanish%201.pdf

p.9 Grab the white plastic extension bed to the left side of the front of the machine and slide it to the left till it comes off.

Assuming you have all the parts, the spring goes inside the little hole in the back of the mechanism.
You then position the lever behind it, line it up with the bar that holds the lever, and put the lever pin back in.
This is very tedious, and can be frustrating. You might consider paying for a new one.

The side cover can be removed with a torx size 15 wrench. Looking down on the machine, you will see a small hole opening in the middle of the machine almost to the left edge-see pic (the top lid covers needs to be up to see it) and loosen the screw 3 turns. That side cover will slide off to the left now and you can access your thread. To take the thread out, turn the hand wheel backwards (to the back) while pulling on the thread.


-Chris

The reason of this missbehave is a destroyed plastic buffer, which is attached to the move limiter for the needle bar frame. It is quite a little delicate to open the machine's housing due to some hidden scews. Neccesary is to open it. You have to empty the accesory drawer. Then you have to remove the underside cover. The right side cover must be removed as well (take care of the screw which fixes the middle part of this. It is found from below through a small channel, just fitting a screw driver through the hole). Below the movable small table at the lower left front, there is a small turnknob for adjusting the horizontal alignment of big patterns. This knob has to be pulled out, also the round cover below it (best use a little hook and pull the cover out at its small hole seen from below). Remove the two screws directly under the movable table. Remove all screws, which are fixing the front cover from below the machine. Remove the hood which covers the needle bar just as you would like to change the light bulb). There are two scews to be removed holding the front cover. The foot presser handle has to be removed as well. Now gently pull the front cover off the machine. It might be neccesary to help moving the cover at the upper side, inserting a screw drivers blade into the gap between cover and machine frame. The cover should snap off now, if there are no forgotten screw connections left.
After the cover is released, take care of the ribbon cable, wich connects the display etc. with the electronich mainboard. the ribbon cable can be teared out carefully of the mainboard connector. Now you have clear sight onto the needle bar's mechanics. if you push the needle bar to the right, you can see, that the needle bar frame is stopped from a small metal piece, fixed with two screws. At the touch point of the frame and the metal piece, there is (or was) the plastic buffer, which is now destroyed and has the consistence of used chewing gum.
There are two choices: Either you find a spare part metal piece with good plastic buffer or you will have to improvise the buffer by handcrafting it.
After you repaired the metal piece, you will have to adjust it.
Moving the needle bar to the right, the needle bar clutch have to release the needle bar before the needle is over the point to stitch to the plate.

Remark: Due to the different length of the screws it might be a good idea to give some notes, which length belong to which hole.

Wish a good success,

Bernd

1. remove the clear bobbin cover
2. slide the needle plate towards you and remove it, do not pry it upward or you'll break the gray plastic housing that supports it.
3. remove the gray plastic piece that is on top of the black bobbin case.
4. remove the black bobbin case from the machine.
5.Look on the side of the bobbin case for a small hole with a screw deep inside of it. That is your tension screw. Turning it to the right increases the threads resistance and left loosens it.

You know you bobbin tension is in the right range with the following test: Have your machine in the ready to sew positon. Meaning the bobbin has thread on it and it's in the machine and the bobbin thread is coming up through the needle plate. Gently pull on the bobbin thread to feel the amount of resistance. It should be slight not tight. If you pull on the thread and feel a light resistance your problem is not your bobbin. If you have looping on the bottom of your fabric, the problem is the top thread.

Looks like you need a new bulb. This machine takes a bayonet style bulb, part number 2PCW is the generic one but you can pay more for a frosted one ($2-$4). To replace you need to remove the lamp cover. Depending on the age of your machine you may either need a phillips or #25 star (torx) driver. The screw is hard to find, it lift the handle up and look just to the rear of it on the left side, there should be a small square hole. The screw is under it. Alternately there is another, smaller hole just to the rear of the first one. You can take your seam guide (or a coat hanger) insert it and push down about 1", the lamp fixture is spring loaded and the end of the bulb will appear below while you push down. While holding down on the spring, push up on the bulb and turn to the left and it should pop out. (note some early models do not have the access hole to the screw, in this case you need to remove the top tray insert, 2 very small phillips screws, then you can see the lamp cover screw).

As to the battery problem, there is a cover on the bottom of the machine that you can pry off. There are 2 AA batteries inside. Remove and replace, you may need to clean the contacts if any corrosion is seen.

best of luck to you!

I would suggest removing all of our thread and rethreading your machine. Put the thread tension at medium. Try a few stitches. If they are unacceptably loose or tight, try loosening or tightening the bobbin's tension. To do this, locate the tiny hole at the front of the bobbin area. This hole is on the outside of the machine. This hole lets you have direct access to the bobbin's tension screw, so find a tiny screwdriver and turn the screw inside the hole a little to the right for tighter tension, or to the left for looser tension. Let me know how it works - I love this sewing machine!