I am hunting for i78H48 datasheet. Is this gamma ic replaceable with AS15-F ?
can someone help please?
can someone help please?
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Re: I78H48 Gamma IC
Found this, and using google translate
http://bbs.pigoo.com/thread-42902-1-1.html
"I7868A" and "i78H48" the two numbers of the IC can only use AS19 to substituteWilling to help but I'm no expert. -
Re: I78H48 Gamma IC
If it works out, maybe you can confirm this for others reading the thread.Willing to help but I'm no expert.Comment
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Hi. We have an office client who has been contacted by the local internet provider that one of the office Windows PCs is infected with a virus. The report has been confirmed. Apparently through a remote outside trigger, this virus is performing brute force attacks around the world from this local IP address at varying times. Aside from low level formatting each PC, what is the recommended approach for this case? Running F-prot (suggested by the internet supplier) has come up empty. We are planning to run hijack this. At this time, we do not know which PC is creating this issue. Internet provider...
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The MAX9590 provides 14 programmable voltage references and four static voltage references for gamma correction in TFT-LCD displays. Two register banks are provided to store two sets of gamma reference values. Gamma values are programmed into the banks through the I2C interface and the outputs can switch between values in 0.5ยตs.
The 14 programmable reference voltages are divided evenly into seven upper and seven lower voltages for the upper and lower gamma curves of LCD column drivers.
Each gamma reference voltage has an 8-bit digital-to-analog converter (DAC) and isolation...10-07-2024, 04:18 AM -
hi
i have the above model of tv and it has gamma problem distort color
Tcon board is v315b1-c01
so i used from samsung le32r86bd the tcon board its exactly tha same nd same inches 32'
I have the following problem when changing the card
the letters of the dialogues are hidden I can not see them
I need to move the bottom of the image up and the top of the image down
I have a problem with the vertical -
Hello!
I have already fixed some TVs in the past years, but now I am planning to buy another faulty unit for cheap. However, checking the pictures that the seller made, I can't decide if it's a Gamma problem or not.
I'm open to learn new thingies, but I don't wanna waste too much money if it's not repairable.
The seller sent me the 3 attached pics.
What do you think?... -
I got here an philips 37pf8404 with a solarized image. image one
First guess its a bad as15f. so I replaced it with another. Same issues
So I replaced it again with a rm5101. Same issues
Problem is that is projecting a solarized image irregularly. When I pull the hdmi cable and put it back all is okay for a undetermined time. It also helps if I change the input from one hdmi port and back.
One thing thats weird and I don't remember if it was the case with the previous tvs I repaired.
When the image is solarized it doesn't affect...
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