Hello. im renovation a Marantz Console Stereo Amplifier PM 25.
One of the potentiometer for the tone control is broken and im having troubles finding a replacement.
I know its 50K ohm.
i think its reverse log.
and 6 pin. Stereo.
The parts list says its a RS05030350
[ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"353","width":"281","data-attachmentid":3270252}[/ATTACH] [ATTACH=JSON]{"data-align":"none",&qu...
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by gbaicu51Hi all,
Looking for advice please, regarding those 2( film capacitor?? - honestly not too confident if are film capacitors). Short version of story : I bought a stagepass 500 active speakers, and found those components nearly blown. I know they are 1= L 125. Any advice where I could find them to buy, and also what else could lead to this fault?( I have a multimeter and soldering iron and I can get fixed if someone could give me some instructions)
Thanks all4 Photos-
Channel: Troubleshooting Audio Equipment
Yesterday, 04:06 PM -
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by TomWaymy bios is corrupted can you someone fix that old bios
windbond w25q128f 1.8V...-
Channel: BIOS & Schematic Requests!
Yesterday, 12:36 PM -
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by sohail5307hi all my friends . in this backup file it stuck on loading bios drivers. i suspect that it was a bios fault
i required fresh bios dump for
thanks in advance...-
Channel: BIOS & Schematic Requests!
Yesterday, 07:16 AM -
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by madman-47need Asus Tuf Gaming B760M-Plus wifi D4 Schematics/board view to identify 2 componet /part number in pics also need to determin if 1700 lga socket one pin broken is important and what it contrlos...
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Channel: Schematic Requests ONLY!
Today, 07:11 PM -
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by pietrek1133Hi, Lately I bought an Razer Blade 14 laptop, from 2016 (RZ09-01652). Unfortunetaly, someone probably practiced soldering on it and there are few lost components: L1, U5 and PU7. Model of motherboard is Betty_R4 MB V3.0 20151216. Could someone check the names of the components for me? Thanks in advance.04-27-2024, 02:39 AM
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by Mathias1xxXHello, I have a customer who updated his bios on his GT72-6QD Dominator G series, He flashed the newest bios (even tho it said first upgrade to v10) But now the device powers on, the fans are turning but nothing more, no image. I tried to download the BIOS from the website and flash that using CH341A Black (GD25B64CISG chip) but still nothing, can someone provide me with the correct bios to flash on the device? Thanks!
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Channel: BIOS Requests ONLY!
Today, 06:14 PM -
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by moscastHi everyone, after having programmed the bios because it was unable to update using the official tool under Windows and also with bios update by pressing F12 on post, now the notebook no longer starts.
I tried to restore the bios backup I had made but it doesn't work. It always gives me a black screen and no boot.
The service tag is: H27K5Q2 and i add my last backup
Someone can help me to understand what is may heppend?...-
Channel: BIOS Requests ONLY!
Today, 03:06 PM -
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by TraptorHi guys,
I have a Gigabyte GTX 1080 G1 Gaming 8GB gpu. The earlier life of this gpu is unknown.
Fans are spinning on full speed.
All main voltages presents but gpu not detected by motherboard.
The voltage on pin 1 of the bios is constantly 1.8V
During visual inspection i noticed a brown spot on the top of the chip.
Maybe burned this GPU?
Does anyone have an idea where I should go next?
How do I check if the GPU is still alive?
[URL=filedata/fetch?filedataid=336585][ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3267995}[/ATTACH][/URL]...05-09-2024, 01:24 PM -
by dreico33Hellow guys, i recently have a Asus 4070 Ti, and a EVGA 3090 Ftw3 both with Dr-Mos Problems.
My question is this : I am having real difficult time desolderig and solder again a new Dr-Mos. Is taking for ever to do the job, especially when you have to disolder the dr-mos and with the IC you are taking along caps, resistances and ... welcome to hell!
I am using a pre-heater board with a temp of 120C and a Quick 861DW 480 Temp air 80. And with all these its like a nightmare take out these IC's and apply fresh solder and install a new one.
So i am asking you...Today, 02:29 PM
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by Raulnngood night! I have this TV, with quite poor build quality. It has a tcon integrated into the panel, a single flex from the tcon to the panel, and the 2 panel controller boards joined by glued flexes. There is no way to separate them.
The symptom is that the image is not visible, but the backlight works. How to know if the problem is in the main or in the tcon-panel? I can't override zones.Today, 02:11 PM -
by NagyeszHey guys, I have a Lenovo Ideapad 320-15ikb NM-B241 rev:1.0.
After turning it on, it runs for a few seconds then shuts off completely. No screen, no fan. After shutdown, a red light comes on and off fast. I've been trying to troubleshoot this for days now. It's never been opened up; the Lenovo sticker is still intact.
(!)I tried with a different BIOS battery, without any ribbon cables, on battery power, without the keyboard, and it's always the same.
Any insights on what might be causing this?...Yesterday, 03:05 AM -
by E--ManHi All,
Thanks for reading. Based on the interesting fact that the vertical lines issue don't seem to effect the menus whatsoever but rather everything around the menu regardless of video is shown, I'm trying to set mine whether the issue is the main board or the t-con board.
Again what's baffling is that the menu is not effected whatsoever. However, any other video displayed regardless of inputs or when no inputs exist exhibits the vertical lines and seem to effect black areas only.
The lines are green in color when the tv is in "Game Mode" and...5 Photos05-12-2024, 10:52 AM -
by madman-47need Asus Tuf Gaming B760M-Plus wifi D4 Schematics/board view to identify 2 componet /part number in pics also need to determin if 1700 lga socket one pin broken is important and what it contrlos...
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Channel: Schematic Requests ONLY!
Today, 07:11 PM -
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by Mathias1xxXHello, I have a customer who updated his bios on his GT72-6QD Dominator G series, He flashed the newest bios (even tho it said first upgrade to v10) But now the device powers on, the fans are turning but nothing more, no image. I tried to download the BIOS from the website and flash that using CH341A Black (GD25B64CISG chip) but still nothing, can someone provide me with the correct bios to flash on the device? Thanks!
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Channel: BIOS Requests ONLY!
Today, 06:14 PM -
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by RunlincHi everyone, the tv was in a continuous reboot cycle. To get the best screen image i can I taped the VGH and VSS pins on the left side buffer board joining ribbon.
I am left with a good image apart from the black horizontal lines that I cannot get rid of.
I cannot find anything on the buffer boards that has shorted.
Do you think there is anything i can do to eliminate the lines, or are they caused by an internal panel short and the image cannot be impoved.
Many thanks for your assistance5 PhotosToday, 07:40 AM -
by tec3000Hi community! Germany calling I am wondering if you guys can help me out. I have an issue with my Sony LED TV. I've been told this is a good place to ask. Thanks for anyone who will reply and offer advice. Appreciated!
I have a KD-65X9005A Sony 4k LED TV. For a few weeks I've got this problem where I turn on the TV and within a few seconds the TV starts getting darker until it shuts itself off and I get the 4 blinking error code. HOWEVER there is one exception: Whenever I switch to the i-Manual, a full screen on-screen instruction manual, the TV never turns off. I tested for hours!...03-20-2024, 07:29 AM -
by moscastHi everyone, after having programmed the bios because it was unable to update using the official tool under Windows and also with bios update by pressing F12 on post, now the notebook no longer starts.
I tried to restore the bios backup I had made but it doesn't work. It always gives me a black screen and no boot.
The service tag is: H27K5Q2 and i add my last backup
Someone can help me to understand what is may heppend?...-
Channel: BIOS Requests ONLY!
Today, 03:06 PM -
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by fharris1977I have a MacBook Pro Touchbar A1706 that won't turn on. With the board removed I'm getting 19.62V and an average amp draw of 0.300A. When I first plug in my ampmeter it goes from 5V to 19.62V after a second or 2 and the amp draw starts at about 0.688A and up to about 0.790A and then it gradually goes down to about 0.155A and works it way up to around 0.330A and then it fluctuates in the range of about 0.200A-0.350A. The voltage stays at 19.62V. Can someone with any experience with this issue help me out. I checked all the main power rails and they were present. Anyone know it would be greatly...Yesterday, 12:39 PM
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by ritaloHello,
I have a MacBook Air 13 inches 2014.
I have set a EFI password and I can't remember it : now I want to reinstall macOS and I can't because the MacBook is asking for the password.
I know how to remove the password with a usb programmer.
I plug the usb programmer to the motherboard and to my pc with usb, I read the EFI and I save it to a file.
Then I have to find this value in the file : $SVS because it indicate where is the password.
But I can't find the value.
I have attached the file
Thank...Today, 12:10 PM