哈囉~我是曾仔… 大家午安!大家好~
今天又跳過…讓過…許多維修實例,剛好又遇到前一篇(HERAN(禾聯)型號:HD 32Z59,啟動後,綠燈閃爍不開機維修…),文末所提,那是與那一片主機板得第一次交手…
所以…,當然不能跳過此篇文章…,一起來看看…
本篇主角:HERAN(禾聯)型號:HD-46Z57
![](https://3.bp.blogspot.com/-AShbsKn5OJw/WjxZeAAImpI/AAAAAAABMsc/tF8TwOzxJW4NR-UDF48BhLxAGcflOi1WQCKgBGAs/s640/001.JPG)
![](https://4.bp.blogspot.com/-tbzRE1fbh3Q/WjxZeH9jcpI/AAAAAAABMsc/91dPJICDnREeyk0XCGLkMSUndnNKLVSsACKgBGAs/s640/002.JPG)
這是它內部的電路分佈:
![](https://1.bp.blogspot.com/-_EtuAixB7EA/WjxZeCXqdII/AAAAAAABMsc/L998749ZGUUInkzDWNxR68reVYle240bwCKgBGAs/s640/004.JPG)
![](https://4.bp.blogspot.com/-rRG76oyU8nI/WjxZeO0CBrI/AAAAAAABMsc/xYwY1WjNtLYnFxXYS9U7zJhYZJul-whcgCKgBGAs/s640/005.JPG)
![](https://2.bp.blogspot.com/-F3l-zvgj--o/WjxZeDQReCI/AAAAAAABMsc/juHqXtwtT_EufwTHtQaeITD6e84QocIfACKgBGAs/s640/006.JPG)
![](https://4.bp.blogspot.com/-O-UEVKdCGBU/WjxZePFQT1I/AAAAAAABMsc/gtenycLR7DkpI8PwKRBIeXygIWbSW0L_gCKgBGAs/s640/007.JPG)
送電後,是有亮起待機燈號的(我不是很習慣待機燈設計為藍燈…)
![](https://3.bp.blogspot.com/-8AK1NN3GDkk/WjxZeEYPXbI/AAAAAAABMsc/tvXfzHzBAv49FJ8Z8zJwtUsiJFgneg-GACKgBGAs/s640/008.JPG)
![](https://4.bp.blogspot.com/-IAVuetcZ0J8/WjxZeFP7j0I/AAAAAAABMsc/zMRxjzDAWgAQtZRoP1WqnJk3R31QylGQACKgBGAs/s640/009.JPG)
![](https://4.bp.blogspot.com/-2Adk4qZod2M/WjxZeLAPK2I/AAAAAAABMsc/q3-kFZNE8u4m4nmsogqc5oCvZDW7XjXkQCKgBGAs/s640/010.JPG)
我又擺起電錶陣勢…,因為還是要來查看各各主電位輸出的狀況…
兩個錶不行…,越擺越多…
![](https://4.bp.blogspot.com/-NbdnoIAnEzg/WjxZeJrB_gI/AAAAAAABMsc/E6vR4Zz_MooDjskeL1TgIjwYYeIN-Ey9gCKgBGAs/s640/011.JPG)
![](https://4.bp.blogspot.com/-4kAEfa4p-zU/WjxZeLP7M8I/AAAAAAABMsc/f1CUQpbajVg0roAFuTFtf8cudgEQjEYRgCKgBGAs/s640/012.JPG)
![](https://1.bp.blogspot.com/-jKFMBbC2Ifk/WjxZeECf8BI/AAAAAAABMsc/cuna8TUXzaIw3G_CUBiSdxI3xJRpiiL3QCKgBGAs/s640/013.JPG)
![](https://2.bp.blogspot.com/-jTRksNoI84Q/WjxZeJo7eOI/AAAAAAABMsc/bYBwdjYQPLgSlhnTzoB1mE-hvc9MJOTZgCKgBGAs/s640/014.JPG)
![](https://2.bp.blogspot.com/-gOlCL4NsZHM/WjxZeGbUcrI/AAAAAAABMsc/WoHQeeB6NbIWV6fTswENbIUPv9rANu5OwCKgBGAs/s640/015.JPG)
![](https://3.bp.blogspot.com/-KA2Oj-5GqKI/WjxZeCpE5TI/AAAAAAABMsc/3WcRE0EzcPIUWbVg93klJXF-TVJrU_y2gCKgBGAs/s640/016.JPG)
最後…頃巢而出…
![](https://3.bp.blogspot.com/-zvI57pAFN9Y/WjxZeI7Yg4I/AAAAAAABMsc/QtiXpPcDIlEBxOoL9QgTRRbIvyg7LZ4HwCKgBGAs/s640/017.JPG)
![](https://1.bp.blogspot.com/-n4W8nRATLmg/WjxZePNAn1I/AAAAAAABMsc/9V9UmnPSXy8Kl6rnk_8H_GSnZerO2T8kwCKgBGAs/s640/018.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~
各位…,寒流來襲…,氣溫驟降…,大家要記得保暖啊…
今天來看這一台液晶電視的維修…
HERAN(禾聯)型號:HD 32Z59
![](https://4.bp.blogspot.com/-dMsrKcxXH2U/WjXgEiuxpMI/AAAAAAABMmM/2t7bdBYP4x8XsaRKh_yes7Kk62-Ol7bxgCKgBGAs/s640/001.JPG)
![](https://1.bp.blogspot.com/-BLBAb6wlLJY/WjXgEkwjjxI/AAAAAAABMmM/Ct63QBkI9A01WLYlvB7spKQImZG15Q6OwCKgBGAs/s640/003.JPG)
這是它的內部電路分佈:
![](https://1.bp.blogspot.com/-5fZsQyo_Gwk/WjXgEgkLEGI/AAAAAAABMmM/zqPWL_4SeXM_rfckxhJ03iD56V0g5wGDQCKgBGAs/s640/004.JPG)
![](https://1.bp.blogspot.com/-dyT77Vg4Q7Q/WjXgEsT9GPI/AAAAAAABMmM/NIZXot8igNgywi__eS3vV9wYQCqcQdrSwCKgBGAs/s640/005.JPG)
![](https://3.bp.blogspot.com/-E5eEiOxf81Q/WjXgEi3Kl3I/AAAAAAABMmM/WCWsxQbkMegBfRpIx5bd-ux1Dv8JabhBACKgBGAs/s640/006.JPG)
![](https://2.bp.blogspot.com/-2UCRDnaQwu0/WjXgEu_uvcI/AAAAAAABMmM/CAu8B-h5eCAIwoWFkcjCfayO_SCBjy4SACKgBGAs/s640/007.JPG)
現在就來送電測試故障現象:
送電後是有待機燈號的,可以啟動轉為綠燈號,不過…是閃爍綠燈…,而且背光也無亮起…
![](https://3.bp.blogspot.com/-OglFAvn27aY/WjXgEn2ozCI/AAAAAAABMmM/gbcpU2EmOy0mfsu_VfkYqhdxqfAufVhJACKgBGAs/s640/008.JPG)
![](https://2.bp.blogspot.com/-T4o4HK4sx1Q/WjXgEpLQ_XI/AAAAAAABMmM/mqDTL1zbjSERpUn2HRGVP_3QE8XsYey-QCKgBGAs/s640/009.JPG)
![](https://3.bp.blogspot.com/-vClDqoL_hhs/WjXgEq88w1I/AAAAAAABMmM/RzJ0fr_-hfsW_Itg80gNk5YITkRvh_xngCKgBGAs/s640/010.JPG)
![](https://2.bp.blogspot.com/-y_LRl1Vz8-o/WjXgEo1ucKI/AAAAAAABMmM/yTMsDJ9XhBEFjDTTT4LJ2i9g-prV9SJqgCKgBGAs/s640/011.JPG)
這個時候…
要擺出電錶大陣來應付了,因為要同時監看多個電位…
![](https://4.bp.blogspot.com/-0jCTHajhILo/WjXgEjm4JBI/AAAAAAABMmM/nuXD_xfdPz06DhwBs43_UdDhIV2Hmhr_QCKgBGAs/s640/012.JPG)
![](https://3.bp.blogspot.com/-MD5rJ_3RR_Y/WjXgEveaiPI/AAAAAAABMmM/FBy9htc_l7Yl7WtYc5jkKDkYJo4ye7OZACKgBGAs/s640/013.JPG)
![](https://3.bp.blogspot.com/-d7k1Rda7Y-4/WjXgEnb43MI/AAAAAAABMmM/TZWGwMJjw-onKAw2xV_0IeMsPVXsdBJuQCKgBGAs/s640/014.JPG)
這個時候…
上頭主電位DC24V,在下張圖照裡,已經開始下降了…,而上頭原先啟動下5.2V的待機,在下一張圖表裡又上升到5.4V,這個便顯示了主板已經從啟動當下又消失了…
![](https://2.bp.blogspot.com/-s4eCxrUfIw8/WjXgEmHZE1I/AAAAAAABMmM/et3VfsSF5mckvupiEPPR-qDGwIeifbSbACKgBGAs/s640/015.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~
來了…8月份第一篇終於來了…,眼見年底將至又要跨年了說…
現在來看看今天的主角,是一台小電視:
TATUNG(大同)號:V22ACIT
![](https://2.bp.blogspot.com/-ALiagSFSktw/WjSG-F21mjI/AAAAAAABMjU/uQkXIR5mI8oMhRBUznznmKf4cV6ijoDpACKgBGAs/s640/001.JPG)
![](https://3.bp.blogspot.com/-40qVSrMo_Tg/WjSG-Gup_TI/AAAAAAABMjU/Z62Zq9zgiaMJZ6Fwp55RdMCnmeT-nQhiwCKgBGAs/s640/002.JPG)
它其實動作算正常,就是亮度比較昏暗…
![](https://3.bp.blogspot.com/-YNbtdfvMr9E/WjSG-H0IuTI/AAAAAAABMjU/xQ5Vfi-YAhYI4Q61jaTCGKF6tZXiZSRdACKgBGAs/s640/003.JPG)
![](https://1.bp.blogspot.com/--B2NkR0pWf0/WjSG-N9KZ-I/AAAAAAABMjU/F1i-ux9M7vIhpVGUlaUgnn6LV_KL4cmhACKgBGAs/s640/004.JPG)
本機器採外置電源適配器,其內部就一塊二合一電路(含液晶驅動與背光驅動…)
![](https://4.bp.blogspot.com/-q8Wo7htDThs/WjSG-Mtzz3I/AAAAAAABMjU/dntdG1OgH1wJwL30iAtTdPYzdXXBdgl4ACKgBGAs/s640/005.JPG)
![](https://4.bp.blogspot.com/-YUlgjg62PMY/WjSG-Ltc0yI/AAAAAAABMjU/2M5hKL3TDTwuETGzOzBNFIl_CqML8GybwCKgBGAs/s640/006.JPG)
現在…
我使用外置燈管測試是不亮的…
![](https://4.bp.blogspot.com/-r3pIhaUqtnQ/WjSG-FitV4I/AAAAAAABMjU/SCq2NGqdH1Yw4UgG6iDK7M4kYH5k9FThgCKgBGAs/s640/007.JPG)
來著手將濾波于以更新…
更新後並無多大效應說……
![](https://3.bp.blogspot.com/-xlP6sIllHMA/WjSG-NpKPnI/AAAAAAABMjU/ONSb3ajcjKoXbvJRUj1EVpvENS_wyirdwCKgBGAs/s640/008.JPG)
我們來查看一下究竟…,有時這個也說不來…,各位就看看圖照吧…
![](https://1.bp.blogspot.com/-afGsa12_GjE/WjSG-E6mmhI/AAAAAAABMjU/7pgiNV0EQ0oCglwokLdYOYsV0U6qHuW9gCKgBGAs/s640/015.JPG)
![](https://1.bp.blogspot.com/-Im1X7XHR_5Y/WjSG-H9Yf5I/AAAAAAABMjU/Gp8vlqcOSlQctWl5SktVGBdqirVp5JxQwCKgBGAs/s640/009.JPG)
![](https://4.bp.blogspot.com/-V3lLzonaNsk/WjSG-N7NlxI/AAAAAAABMjU/WEIvwJJTq_8mLhYE25BTMIOwW7QEyrwUQCKgBGAs/s640/010.JPG)
![](https://4.bp.blogspot.com/-Vg2PHtGh4mc/WjSG-BwxtxI/AAAAAAABMjU/fqadfsNF66EJsH_GDKXzs917FiyJPXfzgCKgBGAs/s640/20170731-195124-990.jpg)
![](https://3.bp.blogspot.com/-hR3mJrti6Co/WjSG-FQf63I/AAAAAAABMjU/WOOO_-7v0rI-9uBwx6YdujAUjW1q1D4HACKgBGAs/s640/20170731-195457-301.jpg)
atunPCLCD 發表在 痞客邦 留言(0) 人氣()