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: General Electronics Technical Discussion Today, 09:52 AM
Replies: 5
Views: 121
Posted By eccerr0r
Re: hard drive logic board Diode identification

I was recently looking at my Antec NeoHE "modular" and a random SATA power cable that seemingly uses the same connector. As skeptical as I usually am I tried tracing the wires on the cable, and lo...
Forum: General Computer & Tech Discussion Today, 01:59 AM
Replies: 36
Views: 423
Posted By eccerr0r
Re: Gateway 80486-DX2/50 Revival

ugh...can't read my old cd-r's anymore... sigh. bitrot...
Forum: Troubleshooting Audio Equipment Yesterday, 11:22 AM
Replies: 145
Views: 2,007
Posted By eccerr0r
Re: Help with blowing transistor NAD T752 receiver

A removed Q528 would simply cause silence on the center channel.
BTW are you testing with the speaker attached or not? The protection system doesn't necessarily protect against all DC conditions.
...
Forum: Troubleshooting Audio Equipment Yesterday, 07:25 AM
Replies: 145
Views: 2,007
Posted By eccerr0r
Re: Help with blowing transistor NAD T752 receiver

Can't believe this amp is so much bad news... Likewise other channels, R573 is also a symptom of frying finals, and I'm beginning to think reassembly/disassembly is putting a toll on the boards...
Forum: General Computer & Tech Discussion 09-28-2022, 11:57 AM
Replies: 36
Views: 423
Posted By eccerr0r
Re: Gateway 80486-DX2/50 Revival

The Weitek was not a 487 or a 486, that was something different. It's not a "performance penalty" rather it's simply slower due to the lower clock rate than the higher clocked 486DX2 or 486DX4.
Forum: Troubleshooting Audio Equipment 09-28-2022, 11:07 AM
Replies: 145
Views: 2,007
Posted By eccerr0r
Re: Help with blowing transistor NAD T752 receiver

Something still doesn't seem right, if you were monitoring the voltage across the resistor and shut down immediately if you saw anything but a few millivolts, should have been able to save it. ...
Forum: General Computer & Tech Discussion 09-28-2022, 10:35 AM
Replies: 36
Views: 423
Posted By eccerr0r
Re: Gateway 80486-DX2/50 Revival

Windows? What's Windows?
The K6-233 is running Linux (and DOS...)

BTW seems a lot of older 486 boards have a coprocessor socket for 487's... which only makes sense if the main processor socket...
Forum: General Computer & Tech Discussion 09-28-2022, 10:02 AM
Replies: 29
Views: 1,958
Posted By eccerr0r
Re: laptop vs desktop rust spinner longevity

Can't say that's true, they all will fail at some point.

Hmm... my WD Green 2TB HDD (3.5", which incidentally gets 120MB/sec sequential - probably one of my slower 2T disks) in my PVR now is 83K...
Forum: General Computer & Tech Discussion 09-27-2022, 05:14 PM
Replies: 36
Views: 423
Posted By eccerr0r
Re: Gateway 80486-DX2/50 Revival

I have an old gateway p5/90 case that looks very similar to this 486dx2-50...full size AT case, board is long gone. It has a K6-233 (with 256MB SDRAM on a 430TX...) board in it now.

Alas no...
Forum: General Computer & Tech Discussion 09-27-2022, 09:35 AM
Replies: 29
Views: 1,958
Posted By eccerr0r
Re: laptop vs desktop rust spinner longevity

Yeah, newer disks are all faster, so what's your point?
Forum: General Computer & Tech Discussion 09-27-2022, 08:29 AM
Replies: 29
Views: 1,958
Posted By eccerr0r
Re: laptop vs desktop rust spinner longevity

Doing sequential reads from the Green AV disk doesn't seem that spectacular.
The Enterprise WD disk and one of the two Blue WD disks seems to be the two that stand out in sequential reads at around...
Forum: Troubleshooting Audio Equipment 09-26-2022, 11:04 PM
Replies: 145
Views: 2,007
Posted By eccerr0r
Re: Help with blowing transistor NAD T752 receiver

Nope, have to do it in situ, powered up...
Forum: General Computer & Tech Discussion 09-26-2022, 10:22 PM
Replies: 29
Views: 1,958
Posted By eccerr0r
Re: laptop vs desktop rust spinner longevity

I ended up getting a bunch of old WD disks recently, and now have two blues (different models -- one is faster than the other), an enterprise, and two greens. One of the two greens is an "always on"...
Forum: Troubleshooting Audio Equipment 09-26-2022, 06:26 PM
Replies: 145
Views: 2,007
Posted By eccerr0r
Re: Help with blowing transistor NAD T752 receiver

Now for debugging stuff like this you need all those jumpers again so you can measure voltages...

And the right tool for this is probably an oscilloscope (and a sine wave signal generator) so you...
Forum: General Electronics Technical Discussion 09-26-2022, 06:21 PM
Replies: 24
Views: 375
Posted By eccerr0r
Re: A Cautionary Tale - Alli Express

I wonder if those chips are even real, sometimes I wonder if sellers assume you can't do anything with BGA chips and send you dummy chips and hope you just eat the loss from the order mistake... ouch.
Forum: Troubleshooting Power Supplies and Power Supply Design 09-26-2022, 08:42 AM
Replies: 48
Views: 610
Posted By eccerr0r
Re: Fish Tank LED Power Supply Gets Hot then shuts down

still trying to come to terms with how big this thing is or isn't. I recall my small 10 gallon fish tank only needing a small lamp, then when we're talking about a 40 gallon tank, a single F40T12...
Forum: General Electronics Technical Discussion 09-25-2022, 08:04 PM
Replies: 16
Views: 2,075
Posted By eccerr0r
Re: USB "Quick" 18W charger ... protocol

I also wonder... what happens if you put 9V into a QC2/QC3 compliant device with no other intelligence? I.e. take a 5V dumb charger and set it to 9V, and plug in the QC2/QC3 device... will the...
Forum: Troubleshooting Audio Equipment 09-25-2022, 07:41 PM
Replies: 145
Views: 2,007
Posted By eccerr0r
Re: Help with blowing transistor NAD T752 receiver

Probably okay to remove them but best to keep them in... in case things haven't been totally solved yet. If you're confident the L + R channels match in behavior now which is close to C channel,...
Forum: Troubleshooting Power Supplies and Power Supply Design 09-24-2022, 10:15 AM
Replies: 7
Views: 192
Posted By eccerr0r
Re: Swollen power bank

I doubt it's hydrogen, this is a waste of lithium if it's hydrogen.

Rather it's more likely electrolyte decomposition. The electrolyte is organic and flammable, and usually organic compounds will...
Forum: Troubleshooting Power Supplies and Power Supply Design 09-23-2022, 05:44 PM
Replies: 7
Views: 192
Posted By eccerr0r
Re: Swollen power bank

It's generated gas. It's usually designed strong enough to withstand any gas generated but generated gas means that much less active ingredients. Plus gases where things used to touch will no...
Forum: General Electronics Technical Discussion 09-22-2022, 05:27 PM
Replies: 77
Views: 823
Posted By eccerr0r
Re: 12v 1uo941243c Relay repairable?

Might be easier to see the colors in sunlight too, it's not only cameras that benefit from better CRI!
Forum: General Electronics Technical Discussion 09-22-2022, 05:07 PM
Replies: 77
Views: 823
Posted By eccerr0r
Re: 12v 1uo941243c Relay repairable?

Take a photo of it in sunlight...

You know, maybe we need to start poking people to do this when they take pictures of resistors asking what color bands they are, so we don't have to trust the CRI...
Forum: General Electronics Technical Discussion 09-22-2022, 04:24 PM
Replies: 77
Views: 823
Posted By eccerr0r
Re: 12v 1uo941243c Relay repairable?

what the heck...what's the switching element in this "relay" ... why aren't these diodes and resistors potted with the rest of the circuitry if there's more in the base?

Without more data...that...
Forum: Troubleshooting Power Supplies and Power Supply Design 09-22-2022, 01:23 PM
Replies: 48
Views: 610
Posted By eccerr0r
Re: Fish Tank LED Power Supply Gets Hot then shuts down

More information about the LED is required. It's surprising to have one lamp powered by 12V or whatever directly, unless it was meant for off-grid use perhaps.

Input/hot side has transistors on...
Forum: General Electronics Technical Discussion 09-22-2022, 11:39 AM
Replies: 26
Views: 393
Posted By eccerr0r
Re: Wind generator charger schematics (or load of baloney ?)

Need more details of how the electromechanical parts are made, what are the rotor windings, stator windingsl is he using magnets or electromagnets to generate the field, what commutator is being...
Showing results 1 to 25 of 500

 
Forum Jump


Badcaps.net Technical Forums 2003 - 2022
Powered by vBulletin ®
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 10:13 AM.
Did you find this forum helpful?