Dear members,
I have a linear Desk variable power supply that has an old Russian Transistor with model KT808AM. It cannot be found any more.
Is it right if I replace KT808AM by 2SD867 ?
Are these two transistors fully compatible according to their specifications and properties?
Regards
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Is KT808AM compatible to 2SD867 ?
Last edited by caspian; 12-30-2023, 10:47 PM.
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Re: *Use Full MOST COMMON I.C FOR LAPTOP YOU SHOULD HAVE IN STOCK*
In the past, I had prepared a list of very popular common ICs for Laptops belonging to 2012-2014. Even though those laptops are quite old now, I print that list here, in case anyone needs it:
BQ24735RGRR_QFN20_3P5X3P5
BQ24737RGRR_VQFN20_3P5X3P5
BQ24725ARGRR_QFN20_3P5X3P5
SY8208BQNC_QFN10_3X3
SY8208CQNC_QFN10_3X3
SY8208DQNC_QFN10_3X3
RT8205LZQW(2)_WQFN24_4X4
RT8207MZQW_WQFN20_3X3
ISL95813HRZ-T_QFN20_3X4
APL5930KAI-TRG_SO8
ISL95833HRTZ-T_TQFN32...Last edited by caspian; 07-31-2022, 04:47 AM.
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Re: Lenovo CE570 NM-A831 Rev 3.0, acpir in windows 10 setup
In addition, check this out:
[url]https://www.badcaps.net/forum/showthread.php?t=108349[/url]Re: Lenovo CE570 NM-A831 Rev 3.0, ac...t=108349[/url]
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Re: asus gl502vsk no +vccore
Probably, the CPU and PCH are fine and the problem is somewhere in the CPU VRM circuit.
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Re: acer 5738g bios
If anyone has more Bios dumps for this mainboard, please upload it:
Acer 5738
Mainboard model:
jv50-mv ddr3 m92 mb
48.4cg08.011
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Re: acer 5738g bios
I have another bios dump for this laptop but it does not work in my laptop. However, it is probably good....Last edited by caspian; 07-25-2022, 08:53 PM.
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Re: Acer 5738 SIO replacement
I tried two different ICs, W25Q16BVSIG and MX25L1606 with a known good dump, but they all resulted in turning on but no display.
The original Bios IC was MX25L1605D.Last edited by caspian; 07-25-2022, 11:02 AM.
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Re: Acer 5738 SIO replacement
the chipset is GM45.
SIO is WPCE773.
I replaced MX25L1605D by MX25L1606. But it did not work. Laptop turns on but no display.
Is it possible that the Bios is programmed somehow to work only with MX25L1605D in Acer 5738?
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Re: ThinkPad X270 doesn't start anymore
yes, probably.
Now you should trace signals according to the following thread:
[url]https://www.badcaps.net/forum/showthread.php?t=44779[/url]Re: ThinkPad X270 doesn't start anym...?t=44779[/url]Last edited by caspian; 07-22-2022, 08:26 AM.
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Re: Lenovo Yoga 500-15IBD-80N6 screen problem
So the cable is probably fine.
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Re: Lenovo Yoga 500-15IBD-80N6 screen problem
If there is a local screen shop, you can take the disassembled laptop there and ask them to test a compatible screen on the laptop. then buy it of it worked.
Does the display get normal at some point if you slowly move the lid up or down or if you move the screen cable?
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Re: Lenovo Yoga 500-15IBD-80N6 screen problem
So test another screen cable and another screen too.
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Re: Lenovo Yoga 500-15IBD-80N6 screen problem
How was HDMI before disabling discrete GPU?
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Re: ThinkPad X270 doesn't start anymore
This damage seems serious and can be the cause of the black screen. you should check this section of the mainboard according to the schematic to discover any defective component there and replace them.
However, it is also possible that the components in that section be still fine.Last edited by caspian; 07-21-2022, 11:24 AM.
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Re: ThinkPad X270 doesn't start anymore
a photo of it would help.
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Re: acer 5738g bios
How to find the VSCC table in the dump file of Post2 that cannot be opened by UEFITool?
I opened the file in Hex Editor. but I did not find the table.
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Re: Acer 5738 SIO replacement
I opened the Bios dump in Hex Editor. But I cannot find the table. Maybe in has a different name in this Bios dump.
The Bios dump is in this link:
[url]https://www.badcaps.net/forum/showpost.php?p=685028&postcount=2[/url]Re: Acer 5738 SIO replacement<br /> ...tcount=2[/url]Last edited by caspian; 07-21-2022, 12:36 AM.
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Re: Acer 5738 SIO replacement
In the web, some people wrote WPCE773 and WPCE775 are compatible whereas some other people wrote they are not compatible.
They are pin-compatible, but I am not sure they be functionally compatible.
Have anyone successfully replaced WPCE773 by WPCE775 so far?Last edited by caspian; 07-20-2022, 04:49 AM.
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