Tip & How-To about Televison & Video

Slow start up of Circuit/cold starting of devices

Many electronic devices have a problem of aging or poor fabrication casuing undue service issues, This is a tip which I have sucessfully useful for many diffficult situations.

There can be many reasons for the slow build up for the picture to appear but this can be usually related mainly with the signal processing stages getting a residual bias due a weakness of components.
This can be mainly capacitors in the convergence section and possible weak semiconductors conducting on heat .
Use a heater to warm up the suspected area and switch on. If the picture on straight , change capacitor suspected. You can switch off the set to cool off then use a heated soldering iron( non static) to touch on small value capacitors. the moment the fault clears out you have the culprit. It mightt take time and patience but is quite effective.
So using the heater for scanning coarse area and using hot iron to corner the component.

make sure that you do not over use or abuse the PCB.

Hope you find this useful.

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When I sew I have thread bunching up underneath the fabric, I've changed needle size, thread, bobbins and cleaned out around the bobbin holder. I'm frustrated and out of ideas.


Susan--
Easy peasy, once you know the problem and how to fix it. It's called "bird nesting" or "thread nesting" or what I refer to as thread "barfs."

Install a brand new needle.
Remove all the thread from the machine.
**ALWAYS RAISE** the presser foot and rethread the top thread.
Verify the top thread path is correct.
Install and thread the bobbin case, make sure it is correct.
Set the top tension to the midway point.

Now retest your machine. Birds nests gone? You may need to tweak the top tension because the factory standard changes due to age and use.

FWIW, problems appearing under the fabric are an issue of the top thread. Thread problems appearing on top of the fabric is a bobbin issue.

What causes Bird Nests Superior Threads

Birds nest under the fabric big loops of thread top side looks good...

WHY IS THREAD BUNCHING UNDERNEATH MY FABRIC

Mar 25, 2017 | Sewing Machines

2 Answers

Can I sew fine knits with my Bernina 830? What would I dial the machine to in order to avoid puckering?


Warning--leaving the presser foot up while sewing will not work because raising the presser foot releases the tension!!! You'll likely end up with a huge knot of thread to remove and possibly damaged fabric.

Fine fabrics present some issues for most machines but there are several things you can do to alleviate or even eliminate issues.

Be sure to use lightweight needles for knits (ball point). Use a good quality fine thread. Loosening the tension will help alleviate some of the puckering. In addition, using a wash-away stabilizer to add body to the fabric will help with puckering. (Even using paper under the fabric will be enough to remove puckering--however, it tends to dull the needle faster than usual--but a new needle is an inexpensive solution to an age-old problem. Also, using a roller foot, teflon foot, or walking foot may be beneficial in feeding the fabric. Some people will starch the fabric to add body.

Seam Puckering Industrial Sewing Thread Tension Coats Industrial

How to Prevent Puckering Sewing Machine

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=13&ved=0ahUKEwjhhe_O2abSAhVQ0WMKHT1-AtAQFghSMAw&url=http%3A%2F%2Fwww.amannusa.com%2Fpdf%2Fnahtkraeuslen_gb.pdf&usg=AFQjCNE-YAZ5WB1V7bFGptxZojumhoodMQ&cad=rja

Perfect Machine Tension Every Time Threads

Feb 23, 2017 | Bernina Sewing Machines

1 Answer

Needle dragging in bobbin casing. How do I adjust needle shaft?


Basic Tips for All
  1. Always turn the handwheel TOWARDS you (counter clockwise) as turning it in the opposite direction (away from you, clockwise) may knock the timing out requiring repair from a service center.
  2. Always be sure your presser foot is in the DOWN position before sewing. Sewing with the presser foot in the up position will cause your thread to tangle and your bobbin to jam.
  3. Change needles regularly (after 16 hours of use) as dull/weak needles can cause damage to your machine and fabric. Only use SINGER needles on your SINGER sewing machine.
  4. Always be sure you are using the correct bobbin for your machine. Class 66, Class 15 and Class 15J bobbins look very similar. However, using the incorrect bobbin class in your machine can cause damage.
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May 16, 2015 | Singer 8763 Curvy Electronic Sewing...

1 Answer

Why is the fabric feeder pushing the fabric toward me instead of awayfrom me?


It is sewing in reverse. Shut down, restart the machine. If this doesn't help, press the backstitch button, and see if it stuck. Try changing the stitch length dial.
If this is an electronic machine, it may need to be serviced. This happened to a embroidery machine I had, when I tried to sew straight stitching. It needed to be service as it was an electronic issue.

Oct 27, 2014 | Sewing Machines

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