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kilah发表于 2023-10-2 22:14 | 只看该作者

T48 Fail self-test

Hello,
I have a T48 fail self-test with no chip inside.

How can i fix it ?

From time to time is working without do something,

2023-10-02_17h02_42.png

2023-10-02_17h02_42.png (90.35 KB)

2023-10-02_17h02_42.png

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5#
kilah发表于 2023-10-13 14:16 | 只看该作者
Component changed.

All working good.

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4#
kilah发表于 2023-10-13 13:27 | 只看该作者
Thank you for replay,
I got my new T-48 programmer, but i want also to repair this one as backup.



I will replace U2A ( AMS1117 ) i next days and return with feedback
Device SN HYR4LK-YX39SF-LWG5TH-BP0894 maybe it helps.

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3#
admin发表于 2023-10-6 17:30 | 只看该作者
回复 2# kilah

This is the first batch of T48, replacing the LDO AMS1117-ADJ  Package SOT89

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kilah发表于 2023-10-2 22:30 | 只看该作者
More tests return short on :

O-25 G-25

on allmost all positions.

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