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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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soundwave ctv1405t power suppy burnup
I am hoping someone can be of assistance in identifying two transistors
which have died as a result of s/c in above. They are marked on board as Q104 and Q105 Idealy a schematic of power supply would be appreciated. Many Thanks |
#2
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soundwave ctv1405t power suppy burnup
So you mean that the markings on the components have burnt to
unreadable? In such case, sometimes it's possible to get them just readable by _gently_ scraping it and using a powerful light to see it. But not nearly always :-( -- When replying, please remove unnecessary quoted lines and write the reply below it. |
#3
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soundwave ctv1405t power suppy burnup
blasted apart completely un readable
Simoc wrote: So you mean that the markings on the components have burnt to unreadable? In such case, sometimes it's possible to get them just readable by _gently_ scraping it and using a powerful light to see it. But not nearly always :-( -- When replying, please remove unnecessary quoted lines and write the reply below it. |
#4
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soundwave ctv1405t power suppy burnup
exsolderman ha escrito: I am hoping someone can be of assistance in identifying two transistors which have died as a result of s/c in above. They are marked on board as Q104 and Q105 Idealy a schematic of power supply would be appreciated. Many Thanks post the chassis ref. i have never heard of this brand before. chances are the guts are made by orion, beko or vestel.... -B. |
#5
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soundwave ctv1405t power suppy burnup
The only number I can find is printed on the main-board.
PB-MAIN-1405-V5 TW. Could this be the chassis number b wrote: exsolderman ha escrito: I am hoping someone can be of assistance in identifying two transistors which have died as a result of s/c in above. They are marked on board as Q104 and Q105 Idealy a schematic of power supply would be appreciated. Many Thanks post the chassis ref. i have never heard of this brand before. chances are the guts are made by orion, beko or vestel.... -B. |
#6
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soundwave ctv1405t power suppy burnup
exsolderman wrote: The only number I can find is printed on the main-board. PB-MAIN-1405-V5 TW. Could this be the chassis number b wrote: exsolderman ha escrito: I am hoping someone can be of assistance in identifying two transistors which have died as a result of s/c in above. They are marked on board as Q104 and Q105 Idealy a schematic of power supply would be appreciated. Many Thanks post the chassis ref. i have never heard of this brand before. chances are the guts are made by orion, beko or vestel.... -B. possibly, but not familiar to me in this case. if you have a digital camera you could try posting some pics on imageshack.us. see if anyone here recognises the board. -b |
#7
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soundwave ctv1405t power suppy burnup
Thanks B.
Now found out Q104=S8550 Q105=2SC368 Which just leaves me one problem; where to get an S8550. Can't find a retailer stocking this transistor or even supplying an equivalent.. b wrote: exsolderman wrote: The only number I can find is printed on the main-board. PB-MAIN-1405-V5 TW. Could this be the chassis number b wrote: exsolderman ha escrito: I am hoping someone can be of assistance in identifying two transistors which have died as a result of s/c in above. They are marked on board as Q104 and Q105 Idealy a schematic of power supply would be appreciated. Many Thanks post the chassis ref. i have never heard of this brand before. chances are the guts are made by orion, beko or vestel.... -B. possibly, but not familiar to me in this case. if you have a digital camera you could try posting some pics on imageshack.us. see if anyone here recognises the board. -b |
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