Re: Help monitor audio gxw-15 subwoofer
What about that swollen cap next to D528? Think it's on the +5V rail which is also used by that black relay.
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Last edited by dobrykamil; 10-18-2023, 01:15 PM.
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Re: Help monitor audio rxw-12 subwoofer
That small transformer is only there to provide positive and negative, standby power rails. All other ones are generated by large-main transformer....
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Re: Help monitor audio rxw-12 subwoofer
That's the standby psu transformer....
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Re: Help monitor audio rxw-12 subwoofer
Don't remember exact value, but VCP is around 16-17V, so VIB should be a bit less than that....
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Re: Macbook Air A2337 Question
I've been reading a bit, regarding ic lock, and since apparently sn is stored in nand(s) and has to match cpu, and possibly even bt and wifi address, something tells me that I would have to do dfu restore, and eventually will end up with Activate Mac screen.
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Re: Macbook Air A2337 Question
Sorry, I should have clarify that, sure, after NAND replacement laptop still will be IC locked, but was wondering, if I could at least boot into OS and turn off FMI with the help of previous owner. I have his contact details and he is willing to help.
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Macbook Air A2337 Question
Hi there
I've recently purchased A2337 with no power issue. Unfortunately upon inspection, I have found that logic board is beyond repair. I know, that both ssd nand still have data on them. I've spoken to prevoius owner who claims that laptop had died on him one day and wouldn't turn on. I'm now waiting on another board to arrive. It's in full working order, except being icloud locked.
I was wondering, if I swap NANDs from faulty board into working board, would it still be IC locked, or laptop would boot into OS nornally?
Thanks in advance.
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Re: Monitor Audio RSW-12 Schematics
You most likely have been sent wrong back plate mate....
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Re: Yamaha RX-V581 DSP dump files
IC44 and IC48 from RX-V583. Both SPI chips 25Q32FVSIG. DSP circuit does look very similar, so give these a try....
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Re: Denon AVR-X2500H burnt HDMI5
It is rather more likely, that you will need to replace MN864788 I'm afraid.
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Audio Pro Addon C5A
Hi
Does anyone know, what voltage should be at DC 1 and DC 2 please?
Long story short, initially diode at DC 1 was short open, and blow smps. Replaced all dodgy parts, triple checked all other components, but main fuse is still getting blown. Mosfet transistor, pwm driver, current sence resistor etc. are also taken down. Just a typical damage with fauly smps power supplies. I'm now suspecting, that main transformer could be a culprit.
Can't be bothered with fixing this speaker in the right way, so looking to use an external power supply. I reckon that DC 2 is around 24V,...Last edited by dobrykamil; 01-30-2023, 05:38 PM.
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Re: Macbook Air A1304 noob question
Thank you both for your replies. Info about nVidia MCP is very helpful!
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Macbook Air A1304 noob question
Hi
I'm working on a bare 820-2375-A board and I'm still noob if it comes to mac logic boards repair, but slowly getting there.
Board doesn't power up when magsafe is connected, green light on the charger, all G3H and S5 rails are present. I does turns on when I bridge SMC_ONOFF_L pads. Is this normal behaviour for boards from 2008/2009?
Thanks in advance.
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Need a Yamaha RX-A3050 dsp 1 spi memory dump
Hi
Does anyone have working .bin file for first DSP? IC912 is either EN25Q32B or W25Q32FVSSIG and dsp itself is D81YK113DZKB5.
Thanks in advance.
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Re: DSP firmware error on a Pioneer LX86
Here is a working dump from LX56 which comes with the same dsp and spi chip....
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Re: bios BOSE |SOUNDLINK COLOR II
Got this file from a Russian forum, where OP said he had found it online and was not tested, but give it a try.
Chip type: W25Q64FW...
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Re: Onkyo ht-r570 freezes up
Most likely, eeprom chip/corrupted firmware is the culprit.
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Re: Sonos Playbar Psu Issue
Problem solved, there was an issue with the person how was trying to fix it not the psu.
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Re: Sonos Playbar Psu Issue
No sure what do you mean by model number. There is only one playbar in the Sonos speaker family....
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