"The most comprehensive training and resource website for a BERNINA mechanic"
Rogerg Reldis
7 Series: Replacing the main shaft and bushing
I will show you what it takes to replace the main shaft and bushing on a 7 series machine
710/750/780/740/770/790
Main Shaft
How to make a tune-up 150/160/130/140 etc 170/165
How I make a tune-up on those models of Bernina's when nothing is wrong with the machine
170/165 Artista, 150/160/130/140, Classic/Virtuosa line
Service the entire machine
B9 Hook machines Lower main shaft replacement
Replacing of the lower main shaft on a B9 hook machine. This video shows you all the adjustments from the knife, the clutch mechanism, and the hook!
710/750/780/740/770/790, New Gen 535/570/590/500, New Gen 435/475QE/480
Driving mechanism / Timing Belts, B9 Hook, Clutch mechanism for thread cutter, B9 Hook
8 Series Bobbin winder not working
The bobbin winder is not working. Here I show you how to troubleshoot and find the problem
830/880,830/880
Bobbin winder
Tune up on 5 or 4 series machines with B9 Hook when nothing is wrong with the machine!
How do I make a tune-up when nothing is wrong with that machine.
New Gen 535/570/590/500, New Gen 435/475QE/480
Service the entire machine
Replacement of lower main shaft / Hook driving gears
The replacement of the feed dot shaft/hook driving gears. This video will cover all the steps from taking it out to all adjustments putting it back together.
440/430/450/etc., 630/640, 550/530/570/580, 330/350/380, 125/220/230/325/335
Driving mechanism / Timing Belts, Hook /Sensor/Mechanism/gear/timing, CB Hook, Feed dog
Diagnostic: 630-640 440-430 etc. stitch width motor not working
The stitch width motor on this machine has a problem. I will show you how you can diagnose the fault without having any parts in stock to test the machine.
630/640, 440/430/450/etc.
Stitch width /mechanical / electronic,
330/350/380 replacing hook driver tooth rack
A common problem on those machines. I will show you how to replace the tooth rack and how to make the hook adjustment afterward
330/350/380
Hook Driver, Hook /Sensor/Mechanism/gear/timing, CB Hook, Driving mechanism / Timing Belts
The stitch width or length indicator jumping or not working when turning the dial
You turn the dial for the stitch width or length and instead of being a smooth changing it is either jumping or not working at all.
200/730, 170/165 Artista, 180/185 Artista, 630/640
Stitch length /mechanical / electronic, Stitch width /mechanical / electronic
8 Series Presser foot bar sensor message
A presser foot bar message on the screen as soon as you turn on the machine
830/880,830/880
Presser foot mechanism / presser foot / Kneelifter
L 890 replace nozzle that threads the loopers.
The thread does not automatically thread like it should.
Overlock L890/L860/L850
Air threading
7 Series machine- Replace presser foot bar rack
You have this "clicking" noise when you lower the presser foot, or when the bar comes up you have this strange noise- more than likely your presser foot bar rack needs to be replaced.
710/750/780/740/770/790
Presser foot mechanism / presser foot / Kneelifter
630-640 440 etc Thread will not pass between driver and hook
This machine will not sew because there is no gap between the hook and the driver.
630/640, 440/430/450/etc.
CB Hook, Hook Driver
Activa Line: 220/230 etc. Reverse button does not always work
Reverse button only works when pushed at one spot. If you push button at the bottom machine will not go in reverse.
125/220/230/325/335
Reverse Stitches/Reverse cam, Buttons/Push button all machines
790Pro or any other B9 hook machine out of time
A 790Pro only a few hours on it is out of time. Once again I show you how to check the B9 hook system and how to adjust it!
710/750/780/740/770/790, New Gen 535/570/590/500, New Gen 435/475QE/480
B9 Hook, Hook Driver, Driving mechanism / Timing Belts, Hook /Sensor/Mechanism/gear/timing
How to replace the needle holder when the needle holder screw is broken
There are times when the tip of the needle holder screw breaks off and you cannot insert a new needle or tighten the needle.
830/880, 710/750/780/740/770/790
Needle bar,
Virtuosa / Activa Series replace timing belt
I will show you how to replace the timing belt and make the necessary adjustments afterward.
150/160/130/140, Classic/Virtuosa line, 125/220/230/325/335
Driving mechanism / Timing Belts
How to replace the black stem in a 8-series bobbin case
The bobbin won't hold in the bobbin case correctly. Something feels funny. Here I show you how to replace the black stem in the bobbin case.
830/880
Bobbin case
7 series replace the touchscreen
How to replace the touchscreen in a 7 series machine. The touchscreen is embedded in the front cover so it is a different procedure than all other machines.
710/750/780/740/770/790
Screen/ LCD / Touchscreen
Diagnostic: 630-640-440-430-450 etc. Error message lost angle signal
The error message "Lost Angle Signal" can have different causes. I will show you how to troubleshoot it on those models.
630/640, 440/430/450/etc.
I do not know what part of the machine is the problem, Sensors: All and any sensors in all the machines, S-Print, Main print, Base print, CPU, any print