Search found 2139 matches

by jwax
Sat Feb 27, 2021 6:09 pm
Forum: General Discussion
Topic: off grid solar project
Replies: 5
Views: 170

Re: off grid solar project

Years ago, I lived in Campbell, CA, and there was a "surplus" solar provider near where I lived. https://www.mlsolar.com/ Maybe you've talked with them. They had incredible deals on panels, probably still do. In designing the system, go for way more solar power than you think you'll need. Forget the...
by jwax
Mon Feb 22, 2021 4:09 pm
Forum: General Discussion
Topic: Computer Photo Organizers
Replies: 1
Views: 117

Computer Photo Organizers

Has anyone had success with USB "PhotoSticks" that portend to allow finding, sorting, and organizing photos on a computer? I'd like software to help eliminate duplicates, and allow me to sort photos by date, time, or maybe even subject. Most of what I've researched are simple memory devices, with li...
by jwax
Sat Feb 20, 2021 4:53 pm
Forum: General Discussion
Topic: Lafayette Stereo-10 Amplifier
Replies: 7
Views: 190

Re: Lafayette Stereo-10 Amplifier

First guess would be output transistor. Next, an aging volume potentiometer.

Let us know what you find!
by jwax
Mon Feb 01, 2021 11:16 am
Forum: General Discussion
Topic: Shopjimmy
Replies: 13
Views: 1367

Re: Shopjimmy

WOW! Thanks Janitor Tzap! Precious info!
I don't suppose you would sell one of those, if you have any spares?

Appreciate your help!

John
by jwax
Sat Jan 30, 2021 6:28 pm
Forum: General Discussion
Topic: Open door to robots count ?
Replies: 1
Views: 256

Re: Open door to robots count ?

Some bot on a fishing expedition.
by jwax
Sat Jan 30, 2021 6:26 pm
Forum: General Discussion
Topic: Shopjimmy
Replies: 13
Views: 1367

Re: Shopjimmy

The diode was a 9 volt Zener, so swapped it out, and the capacitor. No joy. Inspection under a heat sink on a 8-pin dip reveals the IC blew a lead right out of the case. Dunno what IC it was, other than, "IC900". Without a part number for "IC900", I have no way to replace it. Suppose I could buy a S...
by jwax
Tue Jan 05, 2021 7:53 am
Forum: General Discussion
Topic: Shopjimmy
Replies: 13
Views: 1367

Re: Shopjimmy

Janitor Tzap- TV Model is Olevia 427-S12, and power supply is DPS-161APE.

Looks like some carbonization on the board around D903, and C903 (100 MFD, 100V), but haven't got the time to dig in deeper.
by jwax
Sun Jan 03, 2021 5:40 pm
Forum: General Discussion
Topic: Shopjimmy
Replies: 13
Views: 1367

Re: Shopjimmy

Janitor Tzap- It sure looks like the power supply assembly-

https://www.shopjimmy.com/olevia-eec-pw ... pply-unit/

They claim to harvest cosmetically inferior TV's for their good components.

Have to wait and see if I actually get to buy one.
by jwax
Sat Jan 02, 2021 2:15 pm
Forum: General Discussion
Topic: Shopjimmy
Replies: 13
Views: 1367

Shopjimmy

Anybody ever deal with these folks?
https://www.shopjimmy.com/

I'm swapping the power supply board in an older Olivia 27" LCD TV, and found one at this site for $14!
Of course, they're "out of stock" at the moment, but wonder how they can sell a power supply for so cheap.

Are they for real?
by jwax
Wed Dec 23, 2020 9:29 am
Forum: General Discussion
Topic: Ham again!
Replies: 0
Views: 459

Ham again!

Once again, passed the FCC exam for General Class ham license! Last one expired in 1981. A lot has changed in 40 years in ham radio! Satellites, crazy wide bands available (2200 meter band, or above 275 GHz!), computerized everything, handheld 2 meter repeater access, the list goes on. Who's a ham o...
by jwax
Thu Dec 03, 2020 5:12 am
Forum: General Discussion
Topic: To read revolutions per second on multimeter ?
Replies: 2
Views: 519

Re: To read revolutions per second on multimeter ?

Audacity is awesome!
by jwax
Thu Nov 05, 2020 5:40 pm
Forum: General Discussion
Topic: Ghosts
Replies: 10
Views: 1329

Re: Ghosts

I don't believe in ghosts anymore! Black tape over the IR detector has stopped the random turn-on problem! As I recall, years ago when IR remotes were in their infancy, I recall a "kit" that used a high power IR emitter that was good for several hundred feet of range. Wondering if one of those is lo...
by jwax
Mon Nov 02, 2020 3:22 pm
Forum: General Discussion
Topic: Power Supply for mains circuit _linear or switch mode
Replies: 7
Views: 1060

Re: Power Supply for mains circuit _linear or switch mode

Maybe a big-ass 90 VDC motor?
Would like to hear more about this 15 ohm, 110 VDC load, which BTW, is 7.3 Amps.
by jwax
Mon Nov 02, 2020 3:13 pm
Forum: General Discussion
Topic: Ghosts
Replies: 10
Views: 1329

Re: Ghosts

Sounds like the suggested explanation is a cell phone could induce a signal into my IR Remote Control to switch the TV on/off? Never would have guessed that, but what do I know? :) Trying the black tape over the IR detector on the TV. BTW, the remote for the TV is nowhere to be found, certainly not ...
by jwax
Sun Nov 01, 2020 7:06 am
Forum: General Discussion
Topic: Ghosts
Replies: 10
Views: 1329

Ghosts

Have a 23" Insignia LCD TV which I use for video monitoring of a nearby video camera. Been using it for over a year. Several nights ago, it powered itself up, went from "Video" input to "TV" input, and started scanning through the channels. I shut it off manually, but it kept coming on, by itself, f...