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identify Burnt chip

Posted by: DAMDave on

can anyone identify this for me please

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Attachment Size
burnt chip cant identify properly 3.78 MB

Comments

Submitted by PI-TonyS. on 12/04/2019

Hi DAMDave,

Could you provide the P/N for the burnt chip?
And also which distributor you bought it from?
Thank you!

Submitted by DAMDave on 12/04/2019

the chip is on board out of a breezair aircon control box the only info i can find is in the picture
it is a power integration chip ac/dc converter numbers visable are tny26 & 739991

Attachment Size
burnt chip tny26 3.78 MB
Submitted by PI-TonyS. on 12/07/2019

Hi DAMDave,

Thank you for considering PI's products.
Since there is only a photo of the burnt device, it is really hard to determine the failure mechanism.
Do you have any more information on the failure unit? Such as the schematic, layout, the failure condition, is the failure reproducible, besides the TNY26 device is there any other component failure?
It would be very helpful if more information is provided to better determine what lead to the failure.
Thank you!