Badcaps.net Forum
Go Back   Badcaps Forums > Search Forums
Register FAQ Calendar Search Today's Posts Mark Forums Read

Showing results 1 to 25 of 500
Search took 0.02 seconds.
Search: Posts Made By: eccerr0r
Forum: Troubleshooting Power Supplies and Power Supply Design Today, 04:23 PM
Replies: 6
Views: 35
Posted By eccerr0r
Re: Power good problem in PSU all voltages seems to be OK

PG = "Power good" line and is exactly what your tester is indicating that isn't transitioning.
IIRC it's the gray wire in the standard ATX color scheme.

I had a deer psu that failed with power...
Forum: Troubleshooting Audio Equipment Today, 11:10 AM
Replies: 23
Views: 413
Posted By eccerr0r
Re: Car radio stopped working

The vast majority of the active elements are in the COBs including the mixer, RF/IF amplifiers, and most importantly the VCO... external transistors and diodes are fairly few and far in between.
...
Forum: Troubleshooting Audio Equipment Today, 07:32 AM
Replies: 23
Views: 413
Posted By eccerr0r
Re: Car radio stopped working

You mean, test the COBs, nevermind identifying them? :-p

Once again, flying blind...
Forum: Troubleshooting Audio Equipment Today, 01:59 AM
Replies: 23
Views: 413
Posted By eccerr0r
Re: Car radio stopped working

COB Hell.

Yes there's more components on the other side, though covered by the shield.
Forum: Troubleshooting Audio Equipment Yesterday, 01:10 PM
Replies: 6
Views: 39
Posted By eccerr0r
Re: Temic/Telefunken 1890DFC module pinout?

Supposedly the TEMIC 1890DFC is a very sensitive FM receiver (and it indeed was, when it was working) so it's a nice module. However the module does have surface mount devices along with the chips...
Forum: Troubleshooting Audio Equipment Yesterday, 01:04 PM
Replies: 23
Views: 413
Posted By eccerr0r
Re: Car radio stopped working

Well, today's debug session was kind of annoying.

I had broken the power output lead in my bench PSU, and was wondering why my radio didn't work at all on my bench. Finally tried shorting the...
Forum: Troubleshooting Audio Equipment Yesterday, 12:50 PM
Replies: 6
Views: 39
Posted By eccerr0r
Re: Temic/Telefunken 1890DFC module pinout?

Well, as the smarts of the radio is all in this module I have to admit that though the exterior is fairly interesting, the electronics on the other hand is kind of "yawn" ...

Thanks again, going...
Forum: General Electronics Technical Discussion Yesterday, 09:59 AM
Replies: 14
Views: 159
Posted By eccerr0r
Re: Need pointers to knowledge sources for electromagnetic application

Okay sorry about more pet peeve about proper units, I think you mean 13 to 15 kG or kilogauss. This is a flux density as written in that web page and not a force which is needed to generate the...
Forum: Troubleshooting Audio Equipment 08-06-2020, 05:58 PM
Replies: 6
Views: 39
Posted By eccerr0r
Re: Temic/Telefunken 1890DFC module pinout?

Cool, thanks this will get me somewhere I hope... Dang I saw the ad but didn't keep scrolling down, and there it is... a sample...

Just that I thought I counted 18 pins...
Forum: Troubleshooting Audio Equipment 08-06-2020, 01:05 PM
Replies: 6
Views: 39
Posted By eccerr0r
Temic/Telefunken 1890DFC module pinout?

Anyone happen to know of a datasheet for the Temic/Telefunken 1890DFC FM module pinout? Perhaps any radio schematic that uses this module is sufficient, I might be able to pick out what I need.
...
Forum: General Electronics Technical Discussion 08-06-2020, 02:18 AM
Replies: 14
Views: 159
Posted By eccerr0r
Re: Need pointers to knowledge sources for electromagnetic application

As you mentioned iridium twice, this is confusing me, I thought iridium was merely paramagnetic and I can't recall any iridium alloys that exhibit strong ferromagnetism. Do you mean neodymium and...
Forum: General Electronics Technical Discussion 08-05-2020, 07:20 PM
Replies: 7
Views: 145
Posted By eccerr0r
Re: Fluke 87 Meter repair

I was wondering about this too, normally it'd take quite a bit to fry Q8 and normally if Q8 goes, the whole meter is likely not salvageable...
But if you zapped it externally directly with some...
Forum: General Electronics Technical Discussion 08-05-2020, 07:45 AM
Replies: 14
Views: 159
Posted By eccerr0r
Re: Need pointers to knowledge sources for electromagnetic application

1. There are hot plate magnetic stirrers out there already, this is a fairly common lab instrument to use magnetic stirrers so you don't have contraptions over the reaction chamber blocking top...
Forum: General Electronics Technical Discussion 08-04-2020, 06:27 PM
Replies: 14
Views: 159
Posted By eccerr0r
Re: Need pointers to knowledge sources for electromagnetic application

Thanks for the idea... I was wondering about how to build a magnetic stirrer for a hot plate and never thought about doing it this way...should work. I'm not sure exactly how to best do this yet but...
Forum: Troubleshooting Audio Equipment 08-03-2020, 11:02 AM
Replies: 7
Views: 109
Posted By eccerr0r
Re: Help to Choose Rotary Switch for Audio Switch Box

Build your own, though it looks like this is the only wafer needed, just need the shaft and panel mount assembly....
Forum: Troubleshooting Audio Equipment 08-03-2020, 08:26 AM
Replies: 7
Views: 109
Posted By eccerr0r
Re: Help to Choose Rotary Switch for Audio Switch Box

Are these line level or speaker level/watts?

Could start with Mouser PN 633-MRK403A if you're at line level, this is insufficient for speaker level. Not sure if one can get wafer switches anymore...
Forum: General Electronics Technical Discussion 07-31-2020, 05:11 PM
Replies: 9
Views: 367
Posted By eccerr0r
Re: Modifying a Engraving Laser Module with out a TTL Module

Since it's a pcb mount switch, how about just make a little PCB or perfboard for it and screw the pcb to the panel? Too much work?

Definitely something to be thought of when using for new...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-30-2020, 08:07 PM
Replies: 16
Views: 364
Posted By eccerr0r
Re: Jecod DCS3000 marine 24v pump

The reason why the LEDs look suspect is that there are 6 "off" LEDs in the manual for code "3" and you have only 4... that's why I'm confused. But anyway assuming the result is correct...

Since...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-29-2020, 10:17 AM
Replies: 16
Views: 364
Posted By eccerr0r
Re: Jecod DCS3000 marine 24v pump

Since it's the same behavior whether the pump is connected or not, I'd look if the pump is still intact or not?

The LED pattern doesn't seem to match anything in the manual, or am I looking at...
Forum: Troubleshooting Audio Equipment 07-27-2020, 07:54 PM
Replies: 23
Views: 413
Posted By eccerr0r
Re: Car radio stopped working

Most curious. Tuned to a known FM station I poked the antenna wire with a metal wire and... well... still dead.

... however I hear popping...

HMM...
Forum: Troubleshooting Audio Equipment 07-26-2020, 05:55 PM
Replies: 23
Views: 413
Posted By eccerr0r
Re: Car radio stopped working

Real antenna. Not even a power antenna, just a real antenna.
I don't think I'd be getting AM stations if the antenna was borked, so I have to rule out the antenna...
Forum: Troubleshooting Audio Equipment 07-26-2020, 05:17 PM
Replies: 23
Views: 413
Posted By eccerr0r
Re: Car radio stopped working

Same as the usual definition - chip on board, one of the daughterboards has two dies (dice?) black epoxied onto the board itself...

... if someone thinks of sanding off tops of ICs, try...
Forum: Troubleshooting Audio Equipment 07-26-2020, 01:36 PM
Replies: 23
Views: 413
Posted By eccerr0r
Re: Car radio stopped working

Almost DIN but not quite... About 1.5 DIN. Front face is not part of the panel, at least, but the unit is attached at the front so the mounting kit needs to have that adapter else nowhere to attach...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 07-26-2020, 01:27 PM
Replies: 8
Views: 269
Posted By eccerr0r
Re: Cleaning the flux: 99.8% isopropyl vs 70% isopropyl + 30% ethanol mix?

Depends on the flux you're using. If you're using natural rosin as flux, you need isopropanol as the solvent to clean it, 70%-99% doesn't matter.

If you're using a water soluble flux, you should...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 07-26-2020, 12:07 PM
Replies: 16
Views: 415
Posted By eccerr0r
Re: How to correctly desolder through hole IC?

If you're using wick, you need the really fine wire stuff and have plenty of flux on it.
Usually old wick is no good. If your wick is not shiny bright yellow copper colored and just red copper...
Showing results 1 to 25 of 500

 
Forum Jump


Badcaps.net Technical Forums 2003 - 2020
Powered by vBulletin ®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 08:32 PM.
Did you find this forum helpful?