Small Electrical Repairs

Post Reply
Message
Author
User avatar
Andy F
Posts: 1744
Joined: Mon Aug 20, 2018 8:07 pm
Has thanked: 466 times
Been thanked: 536 times

Small Electrical Repairs

#1 Post by Andy F » Tue Nov 20, 2018 9:08 pm

One thing we don't have, is replacement components for everything. It boils down to money and space to store and organization of the parts you have on hand. I cannot post all component troubleshooting guides, but I will try to find reputable repair guides for some of the more common components.
Grid down is okay, but when grid goes back UP, it can cause a damaging spike in Voltage.
I would suggest, if the grid does go down, to unplug devices to prevent damages to those when the grid power is restored. There are other reasons which causes lowered voltages.
Transformers, the small ones.
Some of the more common components can be repaired. Knowing which one needs repair is key.
Voltage. Many of today's small electronic devices use a much lower voltage than what home 110VAC supplies. Those are called Step-Down transformers. Reading the UL label on the device will tell you the Step-Down Voltage used and also the Current and Power the device needs and uses.

HOW do they change that voltage? Transformers.
They can go bad. At age 16, I got a job in a Transformer Mfg company, so I know how they are made. HOW to troubleshoot a transformer, would be to measure the output voltage, if it is wrong or zero Volts then it is probably shorted or blown, respectively. It is not as hard to repair as it looks. Step by Step.
3 Mins - How To Check a Transformer Using MultiMeter.

How to repair transformer winding/repair mini transformer

It'd be best to have a MultiMeter and also to "Learn to Solder" wires. Be surprised how useful a Dremel can be, to open Wall Wart type sealed cases to get to a transformer. :D
"Conspiracy Theorist: One who asks legitimate questions about shady activities of people who're well known to be liars." https://www.archive.org :mrgreen: http://www.secretsinplainsight.com/

User avatar
Andy F
Posts: 1744
Joined: Mon Aug 20, 2018 8:07 pm
Has thanked: 466 times
Been thanked: 536 times

Re: Small Electrical Repairs

#2 Post by Andy F » Tue Nov 20, 2018 9:43 pm

HOW to Solder? I have reviewed this 22 mins video. It is one of the best for a beginner.
I have a red base Weller solder station, a ~$50 model, and a full set of the Tips. I can solder nearly anything Electrical with it.
How To Solder Ultimate Guide - EricTheCarGuy

EricTheCarGuy has quite a good website, on Solving Auto Electricalhttps://www.ericthecarguy.com/faq/solvi ... op-testing
Eric's left side page links, has a LOT on Electrical, including teaching type videos, where his guides easily transfers over to regular Home Electrical. It seems hard to understand until you've done enough for it to start making sense.

Pick from Search Results for the "How To Solder" videos to do the solder job you need to do. https://www.youtube.com/results?search_ ... +to+solder

It behooves me to try to share soldering videos for any and all types of wiring or components. For my needs, a Weller Solder Station, Butane Torch, and a regular Torch, is all I need. I have a preference for using Kester brand of solder, used in big industry.
Last edited by Andy F on Tue Nov 20, 2018 10:35 pm, edited 1 time in total.
"Conspiracy Theorist: One who asks legitimate questions about shady activities of people who're well known to be liars." https://www.archive.org :mrgreen: http://www.secretsinplainsight.com/

User avatar
Andy F
Posts: 1744
Joined: Mon Aug 20, 2018 8:07 pm
Has thanked: 466 times
Been thanked: 536 times

Re: Small Electrical Repairs

#3 Post by Andy F » Tue Nov 20, 2018 10:18 pm

MultiMeter to measure Voltage, Current, and Ohms Resistance.
I have & use two meters, a Fluke117, and this model at $30.00, so I can recommend "Mastech MS8268 Digital AC/DC Auto/Manual Range Digital Multimeter Meter". Can be found on Amazon & elsewhere.

The Mastech is a very good model for the price, and accuracy & performance is very close to Fluke. Treat meters gently for long life. Especially Simpson Analog Meters @ ~$500 a pop.

Mastech is the model I'd definitely recommend for Repairs & Hobbyists. In a Grid Down scenario, having and knowing how to use a meter is a no-brainer. Or, find someone who does.
I am NOT affiliated with either Amazon or Mastech.

Etekcity is also fairly high rated. Under $10.00 is Etekcity model Etekcity Digital Multimeter, MSR-R500 Electronic Amp Volt Current Ohm Voltage Meter Ammeter Multimeters with Diode and Continuity Test Tester, Backlight LCD Display (Red)
"Conspiracy Theorist: One who asks legitimate questions about shady activities of people who're well known to be liars." https://www.archive.org :mrgreen: http://www.secretsinplainsight.com/

User avatar
Andy F
Posts: 1744
Joined: Mon Aug 20, 2018 8:07 pm
Has thanked: 466 times
Been thanked: 536 times

Re: Small Electrical Repairs

#4 Post by Andy F » Wed Jan 16, 2019 12:14 pm

Polish Army Signal Flash Light project photos
Because the battery is not the original FLAT battery, I had to make a roll of Gorilla Tape to hold the batteries securely in case IF the light is drop shocked, because middle battery did pop skew loose & lost power.
Dremeled off the original 1.25" Slide Switch on top, to drill larger hole to add the Momentary ON switch.
Glued in everything with Devcon 2 part epoxy.

The front has 2 slides to use either Clear signal for regular Morse Code communications,
Red (STOP - There's Danger)
Green (OK to Move & GO)
Momentary ON Switch
MomONswitch Polish SigLight.jpg
MomONswitch Polish SigLight.jpg (33.51 KiB) Viewed 208 times
Last edited by Andy F on Wed Jan 16, 2019 12:18 pm, edited 1 time in total.
"Conspiracy Theorist: One who asks legitimate questions about shady activities of people who're well known to be liars." https://www.archive.org :mrgreen: http://www.secretsinplainsight.com/

User avatar
Andy F
Posts: 1744
Joined: Mon Aug 20, 2018 8:07 pm
Has thanked: 466 times
Been thanked: 536 times

Re: Small Electrical Repairs

#5 Post by Andy F » Wed Jan 16, 2019 12:17 pm

The GUTS Reworked/wired
Polish SigLight GUTS.jpg
Polish SigLight GUTS.jpg (85.74 KiB) Viewed 209 times
Red Light Signal
Red Light Polish SigLight.jpg
Red Light Polish SigLight.jpg (38.05 KiB) Viewed 209 times
Green Light Signal
Green Light Polish Army SigLight.jpg
Green Light Polish Army SigLight.jpg (30.75 KiB) Viewed 209 times
"Conspiracy Theorist: One who asks legitimate questions about shady activities of people who're well known to be liars." https://www.archive.org :mrgreen: http://www.secretsinplainsight.com/

Post Reply