Hello all.
I have a US Audio Mix-8 Line Mixer, rack mountable. I changed the fuse and powered on with a current limiter (lightbulb thingy).
I noticed that the voltage regulators (could be 7818-7918 - not sure because the heatsinks covers them) get hot, even though I'm not connecting lines in nor speakers. They get up to 52ºC in a couple of minutes after powering on.
My question: is this normal? My gut tells me it isn't, and I'm thinking about some faulty component pulling too much current. But I have investigated and can't find nothing.
Thanks...
Felipe_Serra_83
Member
Last Activity: 03-25-2025, 12:51 PM
Joined: 11-04-2023
Location: RM, Santiago
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US Audio Mix-8 Line Mixer - Tº while idle
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Request for Phonic powerpod 1860 plus powered mixer service manual and/or schematics
Model: [B]Phonic powerpod 1860 plus[/B]
Board: pod1860 v11 master pcb
(number above this): 0D02005Q0100G
I attached photo of the specific board which I need to check.
Thanks in advance, guys/gals.
Model: [B]Phonic powerpod 1860 plus[/B]
Board: pod1860 v11 master pcb
(number above this): 0D02005Q0100G
I attached photo of the specific board which I need to check.
Thanks in advance, guys/gals.Model: [B]Phonic powerpod 1860 plus[/B]
Board: pod1860 v11 master pcb
(number above this): 0D02005Q0100G
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Request for Tourus AX15 MBT schematics
Hi all. I got this active amp for repair. Issue is in power supply. There are burned components.
The data I got is this:
Model: Tourus AX15 MBT
Board: Tourus AX15 Power A00
(number above this): 053-1405010030R
I wonder if there is a schematic publicly available for this. Worth the try!
Many thanks to whoever can help with this....
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Request for v272un motherboard schematics (board for PC ASUS Vivo AIO)
Hello all. I'm currently checking this PC. I suspect a failure in the power source of EC chip. But without an schematic, I'm kinda groping in the dark. So, any help here would be much appreciated!
Thanks in advance.... -
Cambridge Audio Minx x200 - request for schematics or service manual
Hello all. I dunno if this is the right forum for making this request. If not so, I'll be happy to post this somewhere else.
I have a Minx200 which has several shorted caps. I'm guessing a power source and/or regulator short circuit. I can't find schematics for this device. Any help is kindly appreciated. Thank you! -
Missed that... Sorry.
Checked the "[URL="https://www.badcaps.net/forum/showthread.php?t=103526"]BIOS guides, methods, resources and tools[/URL]".
Went to the Dell website to look for the BIOS file. Got an .exe, which I can't use (I'm on Linux)
The chip is a Winbond, 25Q64FVSIQ. Got the .bin file from the IC using the CH341a programmer.
Made two copies of the file, verified both using md5sum command. I attached both files below.
Service Tag for the laptop: 6684L22
Model: Dell Inspiron 14-5448
Board... -
Request for BIOS bin file - Dell Inspiron 14-5448
As the title says. For programming with [B]CH341a MiniProgrammer[/B]
Thanks all!As the title says. For programming with [B]CH341a MiniProgrammer[/B]
Thanks all!As the title says. For programming with [B]CH341a MiniProgrammer[/B]
Thanks all! -
Yes, I will keep you updated on this.
Enjoy your vacation!Leave a comment:
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Correct, I only did the cmos reset. Like I said, I'm a noob in laptop repairs, but I learnt quite a bit in this experience. Thanks to you and mon2 who replied to this
I'll get the programmer... It's pretty cheap and will sure come on handy for other laptop repairs.
Let you know when I have it. Have a good day!Leave a comment:
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PLTRST# = 3.3 V
(BTW, I found a schematic of the mobo)
No oscilloscope here, so I measured QC1. All six pins = 3.3 V
"Are you sure bios you flashed is good and me cleaned?" Yes, I resetted it by unplugging and then plugging the CMOS battery,...Leave a comment:
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DRAMRST# equals 1.34 V
Hope I measured this one correctly :P. I did it in the back view of the RAM, where pair numbers are printed in the PCB right next to the pins.
BTW, [B][URL="https://www.badcaps.net/member/149220-mcplslg123"]mcplslg123[/URL][/B], I appreciate the time you are putting into this. Thank you!DRAMRST# equals 1.34 V
Hope I measured this one correctly :P. I did it in the back view of the RAM, where pair numbers are printed in the PCB right next to the pins.
BTW, [B][URL="https://www.badcaps.net/member/149220-mcplslg123"]mcplslg123[/URL][/B],Leave a comment:
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Tested, and laptop did the same thing: screen flashes, then shows nothing. One beep, which repeats itself continuously. Fan turns off, CPU and GPU heat up....Leave a comment:
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Hello, all. Couldn't find either the RC nor the RE components. Searched for the mobo's schematic, but no luck either. There's only a manual service for the laptop, but it wasn't of much use.
I did find the coils.
But in desoldering one of them, I accidentally blew a tiny resistor and now I can't find it.
Those d-mned little things. But in any case, fat chance of ever reinstalling it, as I have no microscope. :PLeave a comment:
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Ok, thank you very much. I'll do these and let you know how it goes.Leave a comment:
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Hello, [B][URL="https://www.badcaps.net/member/149220-mcplslg123"]mcplslg123[/URL][/B]. I suppose that by markings you mean the characters printed there.
I attached here some snapshots.
[ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"1336","width":"601","data-attachmentid":3253433}[/ATTACH]
[ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"1318","width":"593","data-attachmentid":3253435}[/ATTACH]...Leave a comment:
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I got the charger, original one, from the guy who gave me the laptop.
Changed the thermal paste again, installed heatsink and fan. Connected screen and battery. Single RAM in its slot.
Plugged in the charger and turned on. Neither the power nor the battery light turn on. The screen flashes once, very lightly, but shows nothing. And like before, the fan turns off after two seconds, the single beep warning sounds, the CPU and GPU get hot.
Does anyone know the terminals of the battery, so I can check the voltage with a multimeter? Perhaps the charger works,...Leave a comment:
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You're absolutely right, [B][URL="https://www.badcaps.net/member/149220-mcplslg123"]mcplslg123[/URL][/B], and I missed that because of all the other numbers behind the "SR" :P. Thanks for the heads up.You're absolutely right, [B][URL="https://www.badcaps.net/member/149220-mcplslg123"]mcplslg123[/URL][/B], and I missed that because of all the other numbers behind the "SR" :P. Thanks for the heads up.You're absolutely right, [B][URL="https://www.badcaps.net/member/149220-mcplslg123"]mcplslg123[/URL][/B], and I missed that because of all theLeave a comment:
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Hi, mon2.
Yes, I can try and get a compatible charger. I'll let you know.
ThanksLeave a comment:
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Dell Inspiron 14-5448 - fan turns off and mobo keeps running
Hi, everyone. First post of an actual repair. I'm a technician but a complete newbie with laptops.
So I got this Dell Inspiron to play with.
No charger, so I connected to my bench PSU.
The laptop also didn't include: hard disk (I added one of my own for testing, see below) and wireless PCB (but I doubt this could have anything to do with this particular failure).
------What it did (and didn't do)------
1) I turned it on and it powered on. Powered down in 2 seconds by itself.
2) Removed RAM, changed slot. Same... -
Re: New Members - please post your introductions here
Hello, everyone. First time here. And I made myself a member, so I could gain access to your attached files.
Bwahahaha!
But I hope I might be able to contribute here, as well.
Greetings, all
PD: From Santiago, Chile. A repair aficionado, since quite recent times (three months). Having tons of fun doing it!Leave a comment:
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