哈囉~我是曾仔… 大家午安!大家好~
今天來看這一台電視維修…,其機種、型號…:RANSO(聯碩)型號:42RS-I6A
![](https://2.bp.blogspot.com/-z9EfhJEHa2M/W6dp0KkipDI/AAAAAAABTuQ/aLbzAl-nsjI7s_UEpLEV-Do0tw8ALiEGQCKgBGAs/s640/001.JPG)
![](https://3.bp.blogspot.com/-iKVEVTseKKg/W6dp0DKVeDI/AAAAAAABTuQ/qWm1fU4SSG0aYq9U4QlB_78Uwvd374BbwCKgBGAs/s640/002.JPG)
這是它的內部電路分佈:
![](https://1.bp.blogspot.com/-mkzqDE1S_Bg/W6dp0IIiM_I/AAAAAAABTuQ/jq-uj7G5KRweY1pbnnmK_6XjUSdIUEvMgCKgBGAs/s640/003.JPG)
![](https://4.bp.blogspot.com/-PsLrt0TqVpw/W6dp0AkrawI/AAAAAAABTuQ/OEWZdxohowwLCWAuCKOppuDuFR98TlvWACKgBGAs/s640/004.JPG)
![](https://2.bp.blogspot.com/-1JPBH8zQ1H4/W6dp0GephHI/AAAAAAABTuQ/eZc7iCMjQ2ASnjpPZc3hW1W3q8ueVYSIQCKgBGAs/s640/005.JPG)
![](https://4.bp.blogspot.com/-q7nQMossFqM/W6dp0AxQdnI/AAAAAAABTuQ/9kqHY4k1l-U9oKZzFPnFYou4veTSHVsMwCKgBGAs/s640/006.JPG)
![](https://1.bp.blogspot.com/-Actnu04mVvA/W6dp0PnkJwI/AAAAAAABTuQ/6Ihexqu0sjM8i1UHA8Noqe_f1kM0yRjjQCKgBGAs/s640/007.JPG)
故障現象…?
我看…用敘述的好了…,送電後是有待機紅燈號的…,啟動後…綠燈號也是有亮起…,不過…僅在霎那間隨即熄滅…
接下來…在主板上量測不到任何電壓…
![](https://3.bp.blogspot.com/-n_0c1tAz1w0/W6dp0PSotvI/AAAAAAABTuQ/ENbv8msWlKcsaHGEzWN_X5PEnzUex2tZwCKgBGAs/s640/008.JPG)
![](https://4.bp.blogspot.com/-Rh7LY4aYrgk/W6dp0Az9p3I/AAAAAAABTuQ/a6ixzdzlAfchZg9WR5rzmL8DJlC-1W8XQCKgBGAs/s640/009.JPG)
僅剩一個待機電壓存在…
![](https://4.bp.blogspot.com/-2b-dZCgX7Sw/W6dp0MbiQLI/AAAAAAABTuQ/50ZhwLTMDasvFECSvemqJk0hjlLYQmNtwCKgBGAs/s640/010.JPG)
感覺…
好像前端電源轉換板有問題…?
![](https://1.bp.blogspot.com/-LmcSLOnM0mQ/W6dp0G0dQTI/AAAAAAABTuQ/fOt7hddYANI1yI4VfJzOhGQ1vZDtvup2QCKgBGAs/s640/011.JPG)
沒交手過這型,先來對其韌體下手…
這下…好像有了新發現…,怎麼讀出來資料都是空的…?
空歡喜啦…,最後求證這是一場夢…!
![](https://1.bp.blogspot.com/-ZUaATu4pnco/W6dp0EZ59EI/AAAAAAABTuQ/z5rkvvnXT_8YH6gRINVzeh2xsZXVAfAIACKgBGAs/s640/012.JPG)
![](https://2.bp.blogspot.com/-fmg2c217qe0/W6dp0ID6x0I/AAAAAAABTuQ/IK8IlrNFLpENUoNee71W2nTXnurDnyHbwCKgBGAs/s640/013.JPG)
atunPCLCD 發表在 痞客邦 留言(0) 人氣()
哈囉~我是曾仔… 大家午安!大家好~
首先…,先來悼念這一位人士-楊偉中先生,說不上來是為何欣賞他…,反正就覺得他的逝去,真是可惜…默哀中…(今天是他的追思會…)
![](https://4.bp.blogspot.com/-t0amLjTjqis/W6XDPCF0ewI/AAAAAAABTrE/p2fx7AiL2-M4L1FS6mipkr02ULpsjgcTwCLcBGAs/s640/2018-09-22%2B12_19_23-%25E6%25A5%258A%25E5%2581%2589%25E4%25B8%25AD%2B-%2BGoogle%2B%25E6%2590%259C%25E5%25B0%258B.png)
今天來看這一台…,SAMPO(聲寶)型號:EM-42LA15D
![](https://3.bp.blogspot.com/-GX9k3VXvLDs/W6W9w3jAkSI/AAAAAAABTqs/5tt5d8km3XMloWcjYKlRqA3zO-20OodBwCKgBGAs/s640/026.JPG)
![](https://1.bp.blogspot.com/-BePn6SNX_iY/W6W9w3AIZvI/AAAAAAABTqs/ZBuTe8QpLk8fiM5MB9RPkFCk0V0H57AIwCKgBGAs/s640/027.JPG)
送電後…,紅燈一直狂閃爍……,這樣當然無法能啟動電視收看說…
![](https://1.bp.blogspot.com/-HK5vWqpLQWA/W6W9w3toIOI/AAAAAAABTqs/9xQguXhrJ5MvPtwUMwxXLAO-0-1MgZB5QCKgBGAs/s640/028.JPG)
![](https://1.bp.blogspot.com/-fBbdTHBonJA/W6W9w_7ksBI/AAAAAAABTqs/r0W10qb6xoE0S26bosizOZ_4U-jYhx8pACKgBGAs/s640/029.JPG)
有時…,甚至於紅燈號是在熄滅的狀態下…,依然會有升壓後的APFC電位…,這下就無言了……
![](https://1.bp.blogspot.com/-0Ps_r1LMu38/W6W9w5IX1XI/AAAAAAABTqs/clh854Jm2jssn9ga7n_dx497HbGqU0WTQCKgBGAs/s640/031.JPG)
![](https://1.bp.blogspot.com/-FzndgBzKhkU/W6W9wwSyXtI/AAAAAAABTqs/8cATpivzar4z3vDDMPm1Acs-YCSVdHe-ACKgBGAs/s640/032.JPG)
![](https://1.bp.blogspot.com/-wjMoG2xmlvY/W6W9w67kNSI/AAAAAAABTqs/Zx3aDUn4dqElOkbAKIZzeXAENem6NRP6ACKgBGAs/s640/036.JPG)
![](https://1.bp.blogspot.com/-60JVdfdqwx4/W6W9w8uXTGI/AAAAAAABTqs/ci8-nWDOoH8dOtR7_L1pkbDwclitHNU8QCKgBGAs/s640/037.JPG)
atunPCLCD 發表在 痞客邦 留言(0) 人氣()
哈囉~我是曾仔… 大家午安!大家好~
今天再來看這一台…,Fujimaru(富士丸)型號:TK-42HV
![](https://3.bp.blogspot.com/-yPemEo5E1Xc/W6MMmVBaLXI/AAAAAAABTnc/qe0X5y9IcKMbMA61UNYAp0xqedqPkoMyACKgBGAs/s640/019.JPG)
![](https://4.bp.blogspot.com/-3T43xVkxhSo/W6MMmfzBlDI/AAAAAAABTnc/obanKjqqVSA8Prs0GhDTd-FtgH6QgtdWwCKgBGAs/s640/020.JPG)
這是它內部唯一一塊電路…,三合一主機板…,三合一解釋過很多遍了,就不再贅述
![](https://2.bp.blogspot.com/-gp6Zav4HG1I/W6MMmXfzCQI/AAAAAAABTnc/gIVfEd-IjFYBTZxNBNgoybc9HHeVgkuNgCKgBGAs/s640/021.JPG)
![](https://2.bp.blogspot.com/-7p6uPZ1SHbg/W6MMmRNJsHI/AAAAAAABTnc/P8U-Oq72pc43kB80aCEvVfecxZarOFkOgCKgBGAs/s640/022.JPG)
這是它的故障現象像:
送電後僅有綠燈號亮著…,並且持續閃爍…
![](https://4.bp.blogspot.com/-wwyvkyqd7_s/W6MMmbm3lJI/AAAAAAABTnc/ZoSe9ptGMj8fcOeuUdNTg3Cd4cuQtMhEgCKgBGAs/s640/023.JPG)
在此同時…
開始了…一系列的查量…
現在發現大桶電位是穩定的…
![](https://3.bp.blogspot.com/-Q4jG-oXX1jk/W6MMmc76RfI/AAAAAAABTnc/aZHMaVsjlNYSoOy0mLnF_d2qEAq1N2xcgCKgBGAs/s640/025.JPG)
![](https://4.bp.blogspot.com/-SaO788Jj3yU/W6MMmUiST3I/AAAAAAABTnc/pWPhijadaUMaCX5odGXOR6OXTXSUmqfUACKgBGAs/s640/026.JPG)
不過…
底下的直流轉換電路的線路上,卻都是一直浮動的…
![](https://2.bp.blogspot.com/-4kTCFPUYGoI/W6MMmZIOlfI/AAAAAAABTnc/Uvo5lugpjHw1kXSGzn1j1LkheZxIEMVLACKgBGAs/s640/027.JPG)
![](https://3.bp.blogspot.com/-qYnkM0tSLBc/W6MMmbuuOAI/AAAAAAABTnc/6pUTPQf_QOkBR_dXuhemv-sudk_5G95qwCKgBGAs/s640/028.JPG)
![](https://3.bp.blogspot.com/-qLEEM8K0png/W6MMmXQkmAI/AAAAAAABTnc/FsX4Hpa8Pdc679PNNcMr_p5ZWhZY1Om9gCKgBGAs/s640/029.JPG)
![](https://3.bp.blogspot.com/-otRX9Dar4vM/W6MMmQ0YEbI/AAAAAAABTnc/Ivsg_gHma8E1ZE9UaYu9cq-rCZAJCsSDgCKgBGAs/s640/030.JPG)
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