Shorting of the Diode D3 on AX3500

11 years 7 months ago #29524889 by shd
Dear Sir
I am new in this field and i am using AX3500 controller . Due to some shorting , D35 and D67 gets shorted . Please send me the diode details so that i can change it at my end and test the controller.

regards
Ms. Shilpa

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11 years 7 months ago #29524890 by cosma
Replied by cosma on topic Re:Shorting of the Diode D3 on AX3500
D35 is a 36V bidirectional TVS. Model SMBJ36CA.

D67 is an 1A, 60V shottky diode. Any diode with these charactristics or better will work.

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11 years 7 months ago #29524891 by shd
Replied by shd on topic Re:Shorting of the Diode D3 on AX3500
Dear Sir
Thanks
Again i found Q57 & D10 shorted. please send the details.Controller seems to be OK.

regards
Ms. Shilpa

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11 years 7 months ago #29524892 by shd
Replied by shd on topic Re:Shorting of the Diode D3 on AX3500
Dear Sir
Thanks
Again i found Q57 & D10 shorted. please send the details.Controller seems to be OK.

regards
Ms. Shilpa

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11 years 7 months ago #29524893 by cosma
Replied by cosma on topic Re:Shorting of the Diode D3 on AX3500
Q57 is an MMBT2222, D10 is a BAT54C.

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11 years 7 months ago #29524894 by shd
Replied by shd on topic Re:Shorting of the Diode D3 on AX3500
Thank you very much sir
regards
Ms. Shilpa

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11 years 7 months ago #29524896 by shd
Dear sir
I had tried to replace the Diode D10 from AX3500. It is connected with R18 & R9. But unfortunately while de-soldering resistance R9 along with track comes out.Now connectivity between R9 with D9 and D10 is OK but connectivity between R9 and small PTH is creating a problem for me. Where this PHT connected? How I can check it? I have found the same PHT on other pair such R1-D12 and so on. Can you explain me what is the interfacing arrangement? So that i can easily debug it.

Regards
Ms. Shilpa

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11 years 6 months ago #29524910 by shd
Replied by shd on topic Re:Shorting of the Diode D3 on AX3500
Dear Sir
Waiting for your reply
regards
Ms. Shilpa
Please note, although no boardcode and smiley buttons are shown, they are still useable

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11 years 6 months ago #29524913 by cosma
Please send a direct request to This email address is being protected from spambots. You need JavaScript enabled to view it. and we\'ll send you a portion of the schematic showing these parts. Note however that repair is extremely difficult to do.

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