Electronics Repair

Lead acid battery tester

Hi, I bought yesterday a battery for my UPS at a shop that specializes in batteries. I had my old battery there, so to...

6 comments posted 1yr

posted by robin_listas

6 comments posted 1yr posted by robin_listas

Cell Phone Charging

When I was in High School I took a Electric class. There was a 6Volt Battery , some assorted length wires with battery...

13 comments posted 1yr

posted by Ed.Vance

13 comments posted 1yr posted by Ed.Vance

What may cause LCD monitor show image for a moment and then go standby

Hi Friends! A friend of mine got an LCD monitor (dell p2211h) for "experiments". It is not working - in the following m...

7 comments posted 1yr

posted by rodiongork

7 comments posted 1yr posted by rodiongork

Universal power supply for PCs, setting voltage

I probably don't need a universal auto power supply, but otoh, if I'd bought one for the last laptop, I wouldn't to spe...

5 comments posted 1yr

posted by NONONOmisc07

5 comments posted 1yr posted by NONONOmisc07

KA7500 vs TL494

Chinese commodity power supplies have tended to use recognizable configurations from times gone by. In doing so, it's e...

0 comments posted 1yr

posted by legg

0 comments posted 1yr posted by legg

Were showing something at our open house that'll make a lot of people very unhappy.

Wonder if any of these have survived.. The people who don't sell Sylvania. And maybe some who do, if they don't save en...

2 comments posted 1yr

posted by mummycullen

2 comments posted 1yr posted by mummycullen

Waking up a serial port

While looking around inside a 12 volt to 120 volt inverter charger I noticed a pin header labeled "5v Rx Tx Gnd" near t...

16 comments posted 1yr

posted by bp

16 comments posted 1yr posted by bp

Car Power supply

I rented a car last week, a mazda 3 maybe 2024 or 5, and it had no cigarrette lighter port, only a round cap where it s...

7 comments posted 1yr

posted by NONONOmisc07

7 comments posted 1yr posted by NONONOmisc07

High wattage USB-C cable for Android, iPhone, iPad, Mac, Dell, Thinkpad & Nintendo

What is /different/ about a 60 watt USB-C cable that says it charges just about everything, including Android, iPhone,...

2 comments posted 1yr

posted by bill

2 comments posted 1yr posted by bill

Chinese or Realtek; can't connect with wifi

I've been having trouble with with the wifi receiver in my fairly old Acer laptop**, but, showing good foresight, years...

5 comments posted 1yr

posted by NONONOmisc07

5 comments posted 1yr posted by NONONOmisc07

easy earbud battery replacement

I just did a battery replacement on a Sony WF1000XM3 when batt life started decreasing from 8 hours to about 5, and the...

11 comments posted 1yr

posted by licensedtoquil

11 comments posted 1yr posted by licensedtoquil

Korg SDD-3300 update (success)

I eventually got fed up and took a gamble replacing the intermittent EL-backlit LCD screen with a modern 20x2 from Crys...

3 comments posted 1yr

posted by user

3 comments posted 1yr posted by user

220VAC generator & 220VAC welder

I was given a 220VAC 50Amp welder. I have 30Amp 220VAC portable generator. I want to have the generator run the welder....

4 comments posted 1yr

posted by gelato

4 comments posted 1yr posted by gelato

Reliable ribbon cables?

The 'press-together' style seems to be all that's available. That usually goes intermittent after several years. Does an...

0 comments posted 1yr

posted by john

0 comments posted 1yr posted by john

Do they even MAKE a Wi-Fi outdoor camera?

On Amazon, I have already researched cameras that "claim" they do what everyone wants them to do, but none of the ones...

19 comments posted 1yr

posted by hankrobins

19 comments posted 1yr posted by hankrobins