Can someone help me find a reasonably priced source for R2A20251 buffer chips? I am trying my hand at repairing a TNPA5534 board from a Panasonic TC-P55ST50 plasma set. Nail polish remover works great at breaking down the RTV silicon around these chips. Thanks for any help!
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Re: R2A20251 buffer IC for TNPA5534
Tried aliexpress?
http://es.aliexpress.com/store/produ...4-c028d0f942e4 -
Re: R2A20251 buffer IC for TNPA5534
Yes, Thanks! That's weird! I did a search earlier and only found one other seller in China for this part. They wanted over $15 US plus shipping! I can get 3 from these people for less than $10 US delivered.. Many thanks! How did you search for this .. curious ?Comment
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Re: R2A20251 buffer IC for TNPA5534
Well, nothing special, i put keyword "R2A20251"
Probably my google knows my habbits better than it is case with yours
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All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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I'm looking to upgrade several 8GB 820-00850 boards to 16GB or 32GB for personal use. I am curious what the best practice and process is for sourcing new replacement chips, and what vendor(s) you guys prefer? Another question is, how do I find compatible chips and their corresponding part/model numbers? For example, in the 820-00850 schematic, the DDR chip U2600 model listed (EDFB232A1MA) corresponds to 1x32GB chip. Of course, I would need 4x8GB chips to replace the 4x2GB chips currently on the board. How do I find compatible 8GB chips? Is it as simple as searching "BGA178 8GB 2133"... -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
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... -
I want to purchase any good flux remover But "chemistronic flux off es835b" is the most common flux remover in my nation..
Is it good to use chemistronic flux off es835b for flux remover?
Or I have to purchase "3m novec flux remover" which is quite expensive in my nation?
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