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Search: Posts Made By: redwire
Forum: General Electronics Technical Discussion Yesterday, 07:25 PM
Replies: 141
Views: 1,693
Posted By redwire
Re: 12v 1uo941243c Relay repairable?

From the .pdf in post #50 (https://www.badcaps.net/forum/showpost.php?p=1166575&postcount=50), master power relay K20 gets a 50A feed and seems to be controlled by the ECU.
It has four (output)...
Forum: General Electronics Technical Discussion Yesterday, 03:49 PM
Replies: 141
Views: 1,693
Posted By redwire
Re: 12v 1uo941243c Relay repairable?

The fusible links all looked OK in the picture. I think OP doesn't know how to test them or is making bad conclusions leading to a goose chase?
Forum: Troubleshooting Audio Equipment 10-04-2022, 01:27 PM
Replies: 3
Views: 73
Posted By redwire
Re: Marantz 74CD80/04B Optical port required

I couldn't find a decent datasheet for the TOTX172. It's used in a few other CD players.
TOTX17_ is 5V, TOTX14_ is 3.3V power.
TOTX173 is a 5V part, 6MB/sec. so it can't do 192kHz. The only risk is...
Forum: General Electronics Technical Discussion 10-02-2022, 08:08 PM
Replies: 16
Views: 369
Posted By redwire
Re: Pinout of TV antenna cable

When I worked at an electronics distibutor, there was always odds and ends of the wrong cable someone had ordered, sitting in reels collecting dust.
There was cheapo customers that didn't care- "4...
Forum: General Electronics Technical Discussion 10-02-2022, 01:59 PM
Replies: 16
Views: 369
Posted By redwire
Re: Pinout of TV antenna cable

Maybe it's old BT Telephone Cable. What does rural telephone cable look like in the UK? I could find modern cable (https://www.elandcables.com/cables/cw1128-external-telephone-cable) as a "single...
Forum: General Electronics Technical Discussion 10-01-2022, 08:43 PM
Replies: 16
Views: 369
Posted By redwire
Re: Pinout of TV antenna cable

Antenna rotators I worked with had a reversible AC motor, brake solenoid, and potentiometer for position feedback. So a few conductors required 3-5 flat 20awg outdoor ribbon cable was commonplace....
Forum: General Electronics Technical Discussion 10-01-2022, 02:16 PM
Replies: 141
Views: 1,693
Posted By redwire
Re: 12v 1uo941243c Relay repairable?

First you would troubleshoot and fix the blowing fuses problem, why are you now suspecting the relays? Look for the short circuits instead of wasting time here.
Forum: General Electronics Technical Discussion 09-30-2022, 09:15 PM
Replies: 16
Views: 369
Posted By redwire
Re: Pinout of TV antenna cable

It's got the the fat insulation on the conductors, solid wire- I've seen on some outdoor 300Ω cables.
Did they even use rotators in the UK? I've never seen it here for TV, only ham use. Satellite...
Forum: General Electronics Technical Discussion 09-30-2022, 04:18 PM
Replies: 16
Views: 369
Posted By redwire
Re: Pinout of TV antenna cable

They might be balanced pairs, like 300Ω twin-lead but I'm not sure what the UK used for antenna feed-ins. One pair for one antenna i.e. VHF, the other for UHF.
There should be a balun or two on the...
Forum: General Electronics Technical Discussion 09-27-2022, 08:48 PM
Replies: 25
Views: 608
Posted By redwire
Re: A Cautionary Tale - Alli Express

That screen cap shows the "color" is not selected, it's not highlighted. Once you click there, then the pic changes to show what you've ordered and highlighted window around the "color", as in this...
Forum: General Electronics Technical Discussion 09-27-2022, 01:09 PM
Replies: 25
Views: 608
Posted By redwire
Re: A Cautionary Tale - Alli Express

It's the market place - vendors pick up stuff from other vendors and resell. chinese stores will sell anything, they don't stick to any category. Pantyhose, LED's, IC's lol.

At least it appears...
Forum: General Electronics Technical Discussion 09-27-2022, 12:57 PM
Replies: 141
Views: 1,693
Posted By redwire
Re: 12v 1uo941243c Relay repairable?

I think this car is totalled?
Forum: General Electronics Technical Discussion 09-26-2022, 02:40 PM
Replies: 25
Views: 608
Posted By redwire
Re: A Cautionary Tale - Alli Express

Only 2 reviews... seems dodgy.
The store (https://www.aliexpress.com/item/1005004561839883.html) is silly, with headers it's double the price of just the 2040 board.

OP can you get a refund or...
Forum: General Capacitor Questions & Issues 09-26-2022, 11:14 AM
Replies: 17
Views: 347
Posted By redwire
Re: Audio rated caps - is it ok to use ‘audio’ rated caps on a non audio device

"Audio" caps are a rip off, 85°C rated and short life in the 1,000hr league. But they have silk inside lol.

OP it's for automotive use, under the hood? Get AEC-Q100 etc. certified parts and...
Forum: General Electronics Technical Discussion 09-26-2022, 10:55 AM
Replies: 25
Views: 608
Posted By redwire
Re: A Cautionary Tale - Alli Express

That sucks, I hate waiting many weeks only to get something silly.
I try to avoid stores around 95% or less feedback on Ali, they seem to be idiots or scammers. I couldn't find the "G-Tank store",...
Forum: General Electronics Technical Discussion 09-23-2022, 01:02 PM
Replies: 141
Views: 1,693
Posted By redwire
Re: 12v 1uo941243c Relay repairable?

OP doesn't give us the clear pictures, car year or wiring diagram or symptoms :banghead: it's impossible to really help him :banghead:
The diode trace has a run that goes nowhere... then I realized...
Forum: Troubleshooting Audio Equipment 09-22-2022, 07:58 PM
Replies: 22
Views: 468
Posted By redwire
Re: Car Audio Delco identification and restoration / repair

The two-pin connector P201, schematic shows one wire is BATT, other is Park Lights. So the unit will not power up unless you have power to BATT (as well as IGN and RCVR).
The 12-pin connector also...
Forum: General Electronics Technical Discussion 09-22-2022, 07:44 PM
Replies: 141
Views: 1,693
Posted By redwire
Re: 12v 1uo941243c Relay repairable?

Yes, inside the relay the track looks to have melted. I would say it was overloaded- which melts the PCB trace and pops the diode.
I would say a new relay or fixing this one and it will just melt...
Forum: General Electronics Technical Discussion 09-22-2022, 06:25 PM
Replies: 141
Views: 1,693
Posted By redwire
Re: 12v 1uo941243c Relay repairable?

You know I'm saying the copper track has melted :poof:
There is a problem with the car. It will just blow the relay once you repair it.
OK the resistor first stripe is brown then for 180Ω, and they...
Forum: General Electronics Technical Discussion 09-22-2022, 05:56 PM
Replies: 141
Views: 1,693
Posted By redwire
Re: 12v 1uo941243c Relay repairable?

Oh, I see the PC board trace is melted and lifted up, it must have fused due to a short circuit in the car somewhere. It might have also blown a 1N4004 diode.
The resistors are not a problem, I see...
Forum: Troubleshooting Audio Equipment 09-21-2022, 05:36 PM
Replies: 22
Views: 468
Posted By redwire
Re: Car Audio Delco identification and restoration / repair

I found some info here https://pcbisolation.com/blog/repairing-and-adding-bluetooth-to-a-90s-delco-radio/
Forum: Troubleshooting Audio Equipment 09-21-2022, 05:23 PM
Replies: 3
Views: 168
Posted By redwire
Re: Transformer Whine: Can it be rebuilt? Mirage S8 Subwoofer

I would first check if it's a power quality problem - high mains voltage causes transformers to vibrate more, and high THD causes the higher harmonics to get heard as the louder buzzing. At...
Forum: General Electronics Technical Discussion 09-16-2022, 12:35 PM
Replies: 27
Views: 533
Posted By redwire
Re: Wind generator charger schematics (or load of baloney ?)

The circuit is a "2N3055 joule thief" which is very common in the "free energy" crowd. Basically, just a primitive one transistor boost-converter.
To sell a fake generator, it's common to show more...
Forum: Troubleshooting Appliances and other Household Electronic Stuff 09-14-2022, 01:57 PM
Replies: 4
Views: 161
Posted By redwire
Re: Computime CANh011 Kitchen Oven controller burnt resistor what value?

CANH011 oven timer board same as Candy/Lamona/Rosieres/Zerowatt/Hoover 42819496, 42837731.
In other board pics on the web, it looks like 100Ω at 2-3W flameproof, fusible. There are 15mmx5mm 3W like...
Forum: Troubleshooting Appliances and other Household Electronic Stuff 09-13-2022, 07:22 PM
Replies: 18
Views: 848
Posted By redwire
Re: Blomberg electric dryer - Need a replacement relay

If the heater relay transistors are independent, then it's either the switch circuit for the relay coil or the MCU is refusing to turn on high heat.
Have you checked the heater temp sensor? 19.5kΩ...
Showing results 1 to 25 of 500

 
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