Electronics Repair

Another EPROM question.

I would like to read what is in the old EPROMs in my machine. They contain the ladder programming for the machine. I ca...

4 comments posted 9yrs

posted by etpm

4 comments posted 9yrs posted by etpm

Old EPROM questions

All that know, I have a machine tool made in 1985 that has, apparently, a faulty circuit board. This board has EPROMs o...

12 comments posted 9yrs

posted by etpm

12 comments posted 9yrs posted by etpm

Fun things to do with LCD TV display bits?

The fancy plastic sheets for distributing the lamp light, microprism sheet etc. A thunder-sheet sound-effect "machine" f...

0 comments posted 9yrs

posted by diverse

0 comments posted 9yrs posted by diverse

20,000 Watt, 5000 Lb Stereo Amplifier (Only $50,000).

FROM: https://www.surplussales.com/Microphones-Audio/MicroAudio-7.html Now, ***THIS*** is what I call a SOUND SYSTEM !!...

14 comments posted 9yrs

posted by oldschool

14 comments posted 9yrs posted by oldschool

Blank RF Probe tips

Do any companies sell those blank RF probe tubes with metal tips? I recall back in the 60s you could buy the entire pro...

35 comments posted 9yrs

posted by oldschool

35 comments posted 9yrs posted by oldschool

Where to find schematic for XAM Model 200 amp?

I just picked up a XAM model 200 amplifier. It was cheap, and I thought it would be a nice small and simple amp for com...

6 comments posted 9yrs

posted by oldschool

6 comments posted 9yrs posted by oldschool

Scott LK150

I am looking for a clean copy of the original assembly manual for a Scott LK150. The unit I have was assembled with Kyna...

2 comments posted 9yrs

posted by pfjw

2 comments posted 9yrs posted by pfjw

Using magnets with tiny SMD devices - any electronic concerns?

At the moment only diodes , but what about more sophisticated stuff? Required a way of holding 2 of the tiniest (2mm lo...

18 comments posted 9yrs

posted by diverse

18 comments posted 9yrs posted by diverse

Eyephones, Earphones . . . . :)

A young guy was bragging to some guys that he just got a brand new I-phone. One of the guys replied, "you got an eyepho...

3 comments posted 9yrs

posted by oldschool

3 comments posted 9yrs posted by oldschool

Re: Looks like the floor of my step fathers, my mother had it installed by her ex. Searching for my full name in gogle images after focebook resutls. What does it mean? Don't associate with my name please.

> Did you mean "flaw"? Mike.

0 comments posted 9yrs

posted by gravity

0 comments posted 9yrs posted by gravity

Samsung S5 earphonr jack

the S5 female was bent out by the dealer. Is there an insert or DIY fix for too large females ?

10 comments posted 9yrs

posted by avagadro7

10 comments posted 9yrs posted by avagadro7

You probably don't know the answer but what allows WiFi scanning anyway?

SUMMARY: What service is it that does the Wi-Fi scanning on Android anyway? http://i.cubeupload.com/lYvIsQ.jpg DETAILS:...

44 comments posted 9yrs

posted by stijndekonlng

44 comments posted 9yrs posted by stijndekonlng

Rigol DS1054 LF common-mode aberation

Looking at Low-Frequency noise on a 60Hz power supply, using a Rigol DS1054 and not getting very far. One puzzling issu...

6 comments posted 9yrs

posted by legg

6 comments posted 9yrs posted by legg

Re: Amplifier transistor substitution.

> >> The smoke escaped from my old oscilloscope today. I've determined that >> it came out of R740, to the bottom right...

6 comments posted 9yrs

posted by curd

6 comments posted 9yrs posted by curd

Power switch is erratic on receiver

I picked up a used Koss HH375 receiver at a Goodwill store. It's purpose is to power some speakers for my computer's so...

16 comments posted 9yrs

posted by oldschool

16 comments posted 9yrs posted by oldschool