Latest threads in Electronics Repair

Advice sought for setting up a Mead model 300 "equatorial refractor" telescope

My kid inherited this apparently ancient Meade 3.1-inch equatorial refractor telescope, model 300, presumably in workin...

11 13yrs

aangel

11 13yrs aangel

OT: Is use of gmail accounts on google/groups safe from spambots ?

I'm happier to use usenet with deliberately defunct apparent email address . I wish to get involved with a google/group...

18 13yrs

diverse

18 13yrs diverse

OKI Semiconductor Inc, looking for MSM6203RS data sheet

Hi I have scads of a part made by OKI Semiconductor around the 1984 - 1989 era. What I need is a full data sheet/s for...

4 13yrs

nosprime

4 13yrs nosprime

Electric scooter speed contoller

Hi guys, I scored an electric scooter on trash day. (A Schwinn zone 5) Of course the SLA batteries were toast. (2 X 12V...

9 13yrs

ggherold

9 13yrs ggherold

wavetek waveform generator model 75 no response :-(((

Hey all, Thanks in advance for any help on this. I'm a high school physics teacher and I came across this device in a s...

6 13yrs

texasdave2

6 13yrs texasdave2

Grounding Antenna Question

Can I ground out my outdoor FM antenna from the pole? Does the negative of the coaxial cable have to be grounded? Which...

18 13yrs

noreply

18 13yrs noreply

A Sony' CRTs color is screwed up.

I have a Sony 19" desktop tv, about 20 years old, which gave a perfect picture since I got it 10 years ago, until I wen...

34 13yrs

NONONOmisc07

34 13yrs NONONOmisc07

hardware and softwar of camera ir 720 tvl sony

hello I am a student and I am trying to do my final project study is "acqui sition of a video signal to a base board (n...

0 13yrs

kawtar.loubna.prof

0 13yrs kawtar.loubna.prof

zener failure question

How often does a zener have a failure mode where it acts like a good (not leaky) much lower voltage zener? I usually se...

5 13yrs

cyberwitch

5 13yrs cyberwitch

Returning to valve equipment for greater reliability?

A correspondent in NSW, Australia says "we live in a damp climate & solid state devices die prematurely" tired of dying...

16 13yrs

diverse

16 13yrs diverse

Sipex DAC 9377-16 no longer sold, but TI DAC712 will serve

The Sipex DAC9377-16-4 has a strange aging problem: resistors in the ladder will drift in value until the analog output...

1 13yrs

billb

1 13yrs billb

Hitachi v152F probe 1 trace is flatline no change in trace

Probe 1 doesnt respond to any input..., ch 2 seems ok. BNC connector was loose and wire to resistor broke loose +Wire f...

2 13yrs

Don

2 13yrs Don

Crossposts and Off Topic Subjects

Lately there have been some posts crossposted to kook/fanatic groups, and individuals here that are posting crap based...

1 13yrs

wb_wildbill

1 13yrs wb_wildbill

Altec Lansing ACS33 subwoofer schematic??

I need to repair this puppy but have searched all over for schematic or service data but all I can find is the user manu...

0 13yrs

mmoss

0 13yrs mmoss

Shopping for a receiver

It is harder and harder for me to understand speech on TV audio. I would like to be able to insert an equalizer into th...

22 13yrs

NoEMail

22 13yrs NoEMail

Electronics Repair

Worth reading in Electronics Repair