Technomate TM-TWIN-OE burned IC SD4841P 67k65yw3j0fz , equivalent IC required

lineofstars's picture

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Joined: Jan 20, 2020

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Technomate TM-TWIN-OE burned IC SD4841P 67k65yw3j0fz , equivalent IC required
January 21, 2020 - 12:22am

Hi everyone.

Few weeks ago I had a power cut for all the building  and my satellite receiver got broken. The device display does not work, but the HDD it can be heard that it spinning.The image on TV got the boot image frozen.

I opened the lid and I found the burned IC: SD4841P  67k65yw3j0fz which is visible burned.

U3 burned.jpg

I would like to know what equivalent can be installed since the SD4841P is a bit difficult to find it to local IC store vendors or it takes 2-3 weeks to get it from abroad.

For example if  can be TOP221-227  ,  TNY264/266-268,  TNY274-280P/G    and if yes, from the given range which exactly and why.

Also what can be done to avoid to happen such circumstances.

Thanks in advance

Sourav Gupta's picture

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Joined: Feb 12, 2018

Replies: 88
Tny not gonna work
January 23, 2020 - 9:35am

Each driver ic works on specific configuration such as frequency, transformer windings and other related feedback Circuit.

The ic, which is burned works in 65Khz frequency and 1:1 p:s transformer winding. The pinout is also different than the mentioned power integration ics.

This, it is not possible to use other ics.

You can purchase the ic from alibaba or other Chinese sources. Do not use other ics since it will be dengarous.