Anyone an idea which high low rectifier it is?
At least I think it is one.
At least I think it is one.
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Re: Burnt chip on Samsung X-buffer
That looks more like some sort of controller IC and there are probably shorted transistors downstream of it. Trace out where it goes and check all the large IGBT transistors for shorts and everything in between if there are small surface mount ones connected off that chip they are probably blown also. -
Re: Burnt chip on Samsung X-buffer
Give us Make and Model and IC part#. This way maybe it can be located by schematic or techs that have access to a board.Comment
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Re: Burnt chip on Samsung X-buffer
That sucks, tv still turns on btw. Havent taken a look but I think its still showing normal picture.
Also I'll post all information ill be able to find soon.Comment
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Re: Burnt chip on Samsung X-buffer
Hmm, that looks like Ve-bias circuit so it would cause dim/underdischarged image or sometimes pink tint.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Burnt chip on Samsung X-buffer
you are compeltely right, when it was burning it had purpleish glow with a dim image! I left the xbuffer connector on the pdp display? This somehow got the IC burning.
The make of this tv is philips.
model : 42PF7320/10
PDP s42SD-yd07
and the model xbuffer is shown in the picture.Last edited by runeazn; 01-29-2015, 02:28 PM.Comment
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Re: Burnt chip on Samsung X-buffer
It's a FET driver, I had a couple of guesses at it already. possibly one of them will work maybe you guys can work out from the cct which type of driver. both rated at 600v
https://www.badcaps.net/forum/showthread.php?t=43613Last edited by tw2005; 01-29-2015, 03:40 PM.Comment
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Re: Burnt chip on Samsung X-buffer
Isn't the same chip findable on the ybuffer or something? As that is still working.Comment
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Re: Burnt chip on Samsung X-buffer
This is part of Ve(bias) so probably not...Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Burnt chip on Samsung X-buffer
I guess, I'm going to need to buy a used xbuffer? As no1 can indetify the FET driver?Comment
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Re: Burnt chip on Samsung X-buffer
found this, looks like different part number but board looks same and off the same panel,
http://www.shopjimmy.com/samsung-lj9...main-board.htmComment
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Re: Burnt chip on Samsung X-buffer
Yeah looks similar problem is. I can't identify the chip on their picture
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Re: Burnt chip on Samsung X-buffer
$21 isn't bad, you can't get board cheaper in Europe somewhere?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Burnt chip on Samsung X-buffer
They go for 80$ here.
I tried to buy my x-main on Alibaba.com not sure if it will arrive, but I paid with creditcard so it should be fine.Comment
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This is a guide that I am writing for helping others to replace their MEC1503 EC chip if it breaks (or to get around an inconvenient prompt to the BIOS). This forum has been extremely helpful to me so I would like to contribute to help others. I will tell you right now that this task is very difficult to do. You MUST have experience and tools to do precision micro-soldering, BGA reballing, trace repair, and general laptop repair skills.
There are some specialty tools needed to do this task. The replacement MEC1503 chips can be acquired from Aliexpress. Do not buy the bare chips as... -
Hi
I have a very strange issue with the BIOS SPI chip of an ASRock B650M PRO RS motherboard.
The SPI chip is an Winbond 25Q256JWEQ model (1V8).
The motherbaord doas not POST - it lits only CPU and DRAM EZ Debug Leds, and stays that way forever.
The Flashback function of the motherbaord is also not working, despite all instructions followed correctly - I'm 100% sure of this.
I have then desoldered the chip, backupped the contents, and tried to earease the chip in order to program stock image, but the chip is locked by status registers SREG2 (TB) and SREG6... -
This specification for the Samsung Galaxy Book 2 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Galaxy Book 2 boardview and Galaxy Book 2 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...09-07-2024, 05:50 AM
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Hi,
I have a Asus Q540v laptop which has no power. I opened the laptop and found this burnt chip. Unfortunately, the marking on the chip is damaged. Anyone able to identify this chip?
THanks,
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Hello All,
This is my first post here, I have worked in IT all my life however my knowledge when it comes to component level motherboard repair is extremely limited. That being said I have been attempting to learn more in this area. This laptop in question had liquid spilled on it a couple years back. No repair attempt was made at that time.
Upon plugging the laptop in and attempting to power it does not do anything besides show a white status light on the front that blinks on and off continuously. I then proceeded to remove the board from the laptop and inspected further....
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