Re: Bitmain AntMiner U1 Tips & Tricks

Trying to repair some AntMiner U1 that failed due to overvoltage issue.

Having trouble identifying the U5 IC chip.

Quote from: miniasic on January 23, 2014, 02:02:56 PM

I have:
Y1 25 MHz Oscillator (thats the 25 in the frequency formula)
U1 CP2102 USB to UART Bridge
U2 BM1380 ASIC
U3 503B ~~or 5038 (hard to read) WTF?~~
U4 AOZ1021A Voltage Regulator
U5 5B402? WTF?

On four of these that I have looked at; the U5 shows "EB=TOW", does anyone else have different part numbers on U5?
http://s18.postimg.org/sys3nw34p/EB_TOW.png
http://s18.postimg.org/sys3nw34p/EB_TOW.png

FYI: Here are the part numbers I found and links to a source for them:

U1 CP2102 USB to UART Bridge
http://www.digikey.com/product-detail/en/CP2102-GM/336-1160-5-ND/696598

U2 BM1380 ASIC
? custom to AntMiner?

U3 503B TVS Diode {voltage spike protection}
http://www.digikey.com/product-detail/en/SP0503BAHTG/F2715CT-ND/1154322

U4 AOZ1021A Voltage Regulator
http://www.digikey.com/product-detail/en/AOZ1021AI/785-1155-1-ND/1856090

U5 5B402 ??? EB=TOW ???