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| Samsung Hardware Repair Post here your Hardware Repairing Hints or Problems with Samsung Phones. |
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03-24-2004, 17:10
| #1 (permalink) |
| Freak Poster  Join Date: Nov 2002
Posts: 256
Member: 17702 Status: Offline Thanks Meter: 0 | SGH-A800 dead due to bad charger Hi, Samsung SGH-A800. Phone was working fine. Someone connect a faulty samsung charger and try to charge it. From then and on the phone does not even power on at all. My guess is that some diode (or zener) **** up if the charger was supplying more than the required voltage. Anyone has seen this before? Any ideas as to what it can be? The peculiar thing is that if I put another (fully charged) A800 battery (from another A800 phone) still the phone does not power on. B.R. |
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05-04-2004, 08:01
| #2 (permalink) | |
| Freak Poster  Join Date: Oct 2003 Location: GSM Center Ro ******** Age: 44
Posts: 249
Member: 41900 Status: Offline Thanks Meter: 2 | Ltc1734 Quote:
Change LTC1734, you can buy it only from Linear tech directly from America.But first remove LTC 1734, and fuse nearby replaced if not OK, and try with a fully chargged accu.If doesn't work you have a dead phone, because you burned the processor. | |
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05-21-2004, 21:12
| #3 (permalink) |
| Junior Member Join Date: May 2004 Age: 41
Posts: 4
Member: 66227 Status: Offline Thanks Meter: 0 | Hello! just connect it to power supply and set the current about 1.7 2.6 Am and voltage between leg 3 and 5 of the battery 2.6-4V because the chaging capositor was shotcircuted and you phone is short circuted so doing so is to restore the capositor.I have been solving several mobile with the same probleam. thanks. |
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05-24-2004, 19:50
| #6 (permalink) |
| Freak Poster  Join Date: May 2004 Location: Iran - Qum Age: 43
Posts: 449
Member: 66171 Status: Offline Thanks Meter: 6 | Hello all samsung cell phone using LTRG as a charger IC, the node on pin 2 must be 5.2 and pin 5 must be 4.22 which directly go to the + VBATT , if else, change LTRG. have fun mOLY |
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