I did it myself, accidentally. Quick answer is YES.
To fix the HCD-MX700Ni, instead of gambling in AliExpress pretending to purchase "original" replacements, I bought a cheap used Sony home cinema with DVD problem that I previously confirmed that it uses CXD9788AR. This way I buy 3 units of that IC (6 channels). Upon arrival, first surprise is that, instead of CXD9788AR (as stated in service manual), it has three CXD9843AR. So this is the first evidence that they’re interchangeable. I extracted one unit from the home cinema and soldered it to my board, success....
Chungalin
Badcaps Veteran
Last Activity: 05-25-2026, 10:46 AM
Joined: 07-02-2014
Location: Menorca
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By the way, has anyone tested if CXD9788AR and CXD9843AR are equivalent? They have the same package and pinout, comparing from schematics.Leave a comment:
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Thanks for the explanation of your case and good that you found a real replacement for that Sony IC. Sony didn’t publish datasheets for their S-MASTER ICs, because they didn’t sell them to third parties.
I’ll need to buy one CXD9788AR for a Sony HCD-MX700Ni and I’m afraid of counterfeits. Some of them are evident, but not others. In my case, OUTR1 output PWM stream is missing. OUTL1 is apparently OK, but that causes right speaker output mute....Leave a comment:
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RT8004GQV or RT8004PQV (no functional difference)
It’s not a RT8209PGQW because this one has 2+5+2+5 pins, not 4+4+4+4....Leave a comment:
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This is not from a laptop, but from a switching mode battery charger. However, the problem here is that the IC blew up and the missing piece is lost, so all we know:
It’s in the primary side of a switching power supply of a tool battery charger, controlling a single mosfet (IRFBC20)
ST is the manufacturer
SOIC-14 or SO-14
Last digits of 1st line: 0106
Last digits of 2nd line: 624
The charger is manufactured in November 2006.
I’m struggling to find a match. I’ve never found a primary controller from ST with 14 pins!...Leave a comment:
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This Acer Chromebook Spin 11 R751T-C7P6, with SNID: 83104782876, S/N: NXGPZEB0058310BAD47600, board: DA0ZHTMB6F0 rev F, refuses to boot. When pressing power button, blue LED turns on. No sound, no beep, no screen backlight. If you keep pressing power button for some seconds, it turns off, and that’s all.
I attach W25Q128FWSIF IC content, if someone can check it there’s something bad with it. Thank you....Leave a comment:
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I don’t think so. The failure I described was an all-or-nothing one, not a selective one like you say. I’d point to laser pickup, possibly dirty or dusty.Leave a comment:
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I beg to differ!
That D2... reference suggests it's a diode. Also, that body proportions suggests a SOT-23, not a SOT-323. Also, leg 2 seems connected to nothing. It could be bridged to leg 3, but I don't think so. I don't even read BR, but 8R. So, my bet is MMBZ5241B, a 11V zener from Fairchild/ON semi. (1) Anode, (2) not connected, (3) Cathode....Leave a comment:
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I’ve eventually repaired it, although not on my own merits. DRV_OCP1 wasn’t a problem after connecting the LED strips. If you disconnect Main board, the PSU turns on by default and the backlight works at max brightness. The problem arised from DRV_OCP2 after connecting MAIN board. I found a blog (Kent Liew LCD repair) that explained a very similar case with BN44-00472A. He found that the culprit is QQ9101 (MMBTA92, marking 2D or YV, depending on manufacturer), that is responsible of raising DRV_OCP2 protection. My transistor tested normal, but I tried to replace it anyway. Now it works!Leave a comment:
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I’m stuck in the same place. In my case, it’s a very similar BN44-00471A from a UE26D4003BW (I’m actually using schematic for BN44-00472A and I’ve found minimal differences). All voltages fall every second. I disconnected all supply to the backlight driver and then it turns on without problem (A5V, B5V, B13V OK). But as soon as I power the backlight and I connect DRV_OCP1 (without LED strips connected), the problem comes again. It seems that IC SEM5025 rises FAIL pin to 5V every two seconds, and I still haven’t found anything bad or shorted. Checked all MLCC around it.Leave a comment:
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Please add SY8113IADC (dK×××, SOT-23-6) under Silergy, thanks.Leave a comment:
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Re: Hp Design Jet T790 Hard drive dead
I'm in the same boat with a similar DesignJet Z5600ps. The original Seagate ST500LT012 is dead in a bad sense.
I downloaded firmware package (almost 1GB) and found that this file is actually a .TAR.GZ containing these files:
CONTENTS
PUMA_04_01_00.1.unsigned.fmw
PUMA_04_01_00.1.unsigned.fmw.sig
.fmw file is compressed or encrypted. I'm stuck here.Leave a comment:
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Re: IC Marking Codes and Datasheets #2
Thank you.
Additionally, from this information I’ve found that the other one (marked GoEAX) is a RY9330DP8.Last edited by Chungalin; 10-04-2023, 02:04 PM.Leave a comment:
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Re: IC Marking Codes and Datasheets #2
I think my description was accurate enough, but here you have a picture:...Leave a comment:
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Re: IC Marking Codes and Datasheets #2
It’s not a standard motherboard, it’s an arcade machine emulator from SNK MVSX.Leave a comment:
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Re: IC Marking Codes and Datasheets #2
Now I'm trying to identify a buck DC-DC IC, SOIC-8 package (I think no exposed pad), pin 2 is input, pin 3 is output SW, pin 4 is GND, and marking is GMDAE in large letters, nothing else. Possibly chinese. If that helps, there's another buck IC in the same board with same package, pinout and letter style, and marking is GoEAX, possibly same manufacturer.Leave a comment:
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Re: IC Marking Codes and Datasheets #2
Wrong, because picture shows a SOT23-8, and this one is a SOT23-6. Also, top marking in picture is ACM and this one is AGM.
Then, it's a MPS MP3414DJ....Leave a comment:
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Re: IC Marking Codes and Datasheets #2
I've found a SOT23-6 with marking |AZEM that looks like MPS made, but it's not in your list. Any idea?
It's in the secondary side of a Chicony USB-C laptop charger (A18-045N1A).Leave a comment:
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Re: LG 32LJ610V with the blue tint of death. LED replacing...
Never thought about this, but today I’ve opened a Samsung UE40J5200AWXXC with bluish backlight. The first surprise is to find some LED totally blue, while others are still perfectly valid white. When looking carefuly, I’ve found several yellowish tiny squares (about 1.5mm side) fallen inside the backlight chassis. These squares glow white when exposed to blue LED light, and if I put one of these squares in front of the blue LED, it turns white! So, in this case, the failure is simply that these...Last edited by Chungalin; 01-25-2023, 10:58 AM.Leave a comment:
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