彩色电视机维修经验

序号类型机型机芯故障现象/问题1PTV48/54/60P91548P977CRT规格2PTV48P915/93二极管易损坏事宜3PTV48P915/93前框右上角脱漆4PTVA10PTV“啪”“啪”响了两声，即不开机，红灯亮5PTVA10PTV屏幕右上角出现SDM,AV无伴音6PTVA10PTV有时开机屏幕上方有一条红线,有时正常7PTVA10PTV43PTV偏转线圈插座处的铜箔易断的改进措施8PTVA10PTV43PTV会聚和聚焦的调整标准9PTVA10PTV关于PTV小附件位号填成XXXX,品名尽量详细10PTVA10PTVA10PTV无光无声的技改方案(被27号技改案代替)11PTVA10PTVA10PTV无光无声的技改方案12PTVA10PTVA10PTV的新增加电路13PTVA10PTV小信号板SSB出现故障14PTVA10PTVA10PTV小信号板的修理事宜(SF015236作废)15PTVA10PTV快速开关机时，偶尔进入暂停状态16PTVA10PTV快速开关机时，偶尔进入暂停状态17PTVA10PTV无光无声，7550场块、7802行管易损坏改进措施18PTVA10PTVCRT打火使行场输出烧，无光无声19PTVA10PTV故障现象：无光无声20PTVA10PTV无光，6003二极管易损坏21PTVA10PTV关于A10PTV的SSM板更换事宜(用新型直接代用老型号板)22PTVA10PTVCRT代换23PTVA10PTVG2的调整24PTVA10PTV7301、7302易损坏改善措施25PTVA10PTVA10PTV会聚调整26PTVA10PTV图象会聚乱，然后保护27PTVA10PTV开机即进入SDM状态28PTVA10PTV会聚可调整,但只能存住一段时间29PTVA10PTV屡次烧行管30PTVA10PTV无光无声，10秒后保护31PTVA10PTV有时自动关机32PTVA10PTV部分台伴音不清,微调后正常,存储后变为无声33PTVA10PTV会聚不可调34PTVA10PTV无光无声,红灯闪两次35PTVA10PTV无光无声,+B,灯丝工作正常36PTVA10PTV会聚可调整,但存不住37PTVA10PTV开机无光无声,红灯闪4次38PTVA10PTV会聚不良,不可调,无信号时噪点呈放射状39PTVA10PTV无光无声(灯丝亮,调加速极会有回扫线)40PTVA10PTV开机出现红色回扫线,然后保护41PTVA10PTV无光,无声42PTVA10PTV无光无声43PTVA10PTV三无,红灯亮,开机继电器有吸合声44PTVA10PTV无光无声45PTVA10PTV无光无声,红灯闪烁46PTVA10PTV三无,开机保护,红灯闪3次47PTVA10PTV无光无声,机内有唧唧声48PTVA10PTV无光无声49PTVA10PTV无光无声50PTVA10PTV无光无声,红灯闪烁51PTVA10PTV需反复按电源开关才能开机52PTVA10PTV2.01版本OPT码:99/253/132/255/88/0/0/053PTVA10PTV2.02版本OPT码:99/253/190/255/88/0/0/054PTVA10PTV更换SSB注意事项55PTVA10PTV更换SSB注意事项补充说明56PTV43PP925/93A10PTV不能二次开机。故障代码4。57PTV50PP925/93A10PTV二次开机后，机内有啾啾响声，不能开机58PTVA10PTV,A10,EM1AEMIA、A10PTV和A10软件数据丢失问题59PTVALL修PTV的注意事项60PTVDPTV325音量70以上整机保护61PTVDPTV325关于55PP8620/93前框与中框不平，中框的两角高于前框62PTVDPTV325后盖与中框接口处有缝隙，通过缝隙可看到机内线路和投影管。63PTVDPTV325红灯亮,不工作64PTVDPTV325三无红灯不亮65PTVDPTV325CRT灼伤的改善措施66PTVDPTV325、DPTV320个别频道不定时出现断音67PTVGFL7D开机一段时间后会出现图象抖动而后保护，且扬声器也有发出声音的故障68PTVGFL6D有数据的会聚存储IC1169PTVGFL6D喇叭有“哔叭”声70PTVGFL6D三无71PTVGFL6D烧Q55172PTVGFL6D无图象73PTVGFL6D间歇保护，反复烧Q90674PTVGFL6D烧Q401，R40075PTVGFL6D有和无镶边的CRT之间不能相互替换76PTVGFL6D有和无镶边的CRT之间不能相互替换77PTVGFL6D只有兰屏，无图象78PTVGFL6D漏夜79PTVGFL6D有和无镶边的CRT之间不能相互替换80PTVGFL6D有和无镶边的CRT之间不能相互替换81PTVGFL6D伴音“喀喀”声82PTVGFL6D有和无镶边的CRT之间不能相互替换83PTVGFL6D有和无镶边的CRT之间不能相互替换84PTVGFL6D漏夜85PTVGFL6D会聚不良（缺少会聚设置）86PTVGFL6D用户控制组件48352193705987PTVGFL7D保护，红灯亮88PTVGFL7DTV无图象89PTVGFL7D三无90PTVGFL7D满屏绿色回扫线91PTVGFL7D调整会聚时，无红绿兰92PTVGFL7DTV无图象93PTVGFL7D不开机94PTVGFL7D行失真95PTVGFL7D烧Q55196PTVGFL7D行失真97PTVGFL7D冷冻液98PTVGFL7D会聚差，不能存储99PTVGFL7D三无，会聚不良100PTVGFL7D图象弯曲101PTVGFL7D会聚不良102PTVGFL7D会聚不能调，红灯亮103PTVGFL7D三无104PTVGFL7D无伴音105PTVGFL7D保护，红灯亮106PTVGFL7D红灯亮107PTVGFL7D光栅闪108PTVGFL7D红灯闪烁109PTVGFL7D绿灯亮，不启动110PTVGFL7D有声无图111PTVGFL7D有时不能开机或图象抖动左右图象压缩112PTVGFL7D开机保护113PTVGFL7D一条亮线114PTVGFL7D三无115PTVGFL7D图象失真116PTVGFL7D遥控不开机117PTVGFL7D枕型失真118PTVGFL7D不开机119PTVGFL7D不能开机120PTVGFL7D无伴音121PTVGFL7D不能开机122PTVGFL7D红灯亮123PTVGFL7D红灯亮124PTVGFL7D三无125PTVGFL7D蓝枪不亮126PTVGFL7D不开机127PTVGFL7D红灯亮128PTVGFL7D无声无图129PTVGFL7D开机保护130PTVGFL7D红灯闪，不开机131PTVGFL7D打火132PTVGFL7D红灯闪，不开机133PTVGFL7D绿灯亮134PTVGFL7D绿灯亮，有声无光135PTVGFL7D三无136PTVGFL7D无声无图137PTVGFL7D有声无图138PTVGFL7D有时不能开机或图象抖动左右图象压缩139PTVGFL7D开机保护140PTVGFL7D蓝枪不亮141PTVGFL7D不开机142PTVGFL7D红灯亮143PTVGFL7D红灯闪，不开机144PTVGFL7D开机保护145PTVGFL7D满屏绿色回扫线146PTVGFL7D三无147PTVGFL7D遥控不开机148PTVGFL7D有声无图149PTVGFL7D三无150PTVGFL7D三无，视放截止151PTVGFL7D打火152PTVGFL7D红灯闪，不开机153PTVGFL7D绿灯亮154PTVGFL7D绿灯亮，有声无光155PTVGFL7D三无156PTVGFL7D无声无图157PTVGFL7D有声无图158PTVGFL7D有时不能开机或图象抖动左右图象压缩159PTVGFL7D不开机160PTVGFL7D绿灯亮161PTVGFL7D三无162PTVGFL7D三无，有时红灯亮163PTVGFL7D新的软件/高频啸叫/T900的12NC164PTVGFL7D间歇保护，反复烧Q906165PTVGFL7D无光声，蓝管裂或DY坏166PTVGFL7DPTV会聚调整167PTVGFL7D开机保护168PTVGFL7D三无169PTVGFL7D三无170PTVGFL7D无伴音171PTVGFL7D场上部压缩，行幅小，枕型失真172PTVGFL7D烧Q401，R400173PTVGFL7D保护，不能开机174PTVGFL7D收不到TV节目，AV1无显示175PTVGFL7DRF无图象，AV有图象176PTVGFL7DCRT漏液177PTVGFL7D屏幕上有许多隐约的干扰黑线178PTVGFL7D会聚不好179PTVGFL7D进入SAM的方法180PTVGFL7D图象左部崴181PTVGFL7D保护,死机或Q906屡烧182PTVGFL7D高压跳火183PTVGFL7D保护，红灯亮184PTVGFL7D打火185PTVGFL7D漏夜186PTVGFL7D开机保护187PTVGFL7D开机保护188PTVGFL7D三无189PTVGFL7D红灯亮，三无190PTVGFL7D三无191PTVGFL7D几何失真192PTVGFL7D兰枪不亮193PTVGFL7D开机保护194PTVGFL7D间歇性保护或Q906出现重复性故障195PTVGFL7D三无,红灯闪196PTVGFL7D无光栅,有声音197PTVGFL7D会聚不能调整198PTVGFL7D整机不能操作199PTVGFL7D完全不动作,无图无声,Q902或Q906失效200PTVGFL7D行幅不足201PTVGFL7D无图无声,D902短路202PTVGFL7D整机不能操作203PTVGFL7D显象管漏液204PTVGFL7D高频啸叫大信号板出来205PTVGFL7D有时不能开机或图象抖动左右图象压缩206PTVGFL7D满屏绿色回扫线207PTVGFL7D换IC551后场幅不足208PTVGFL7D丽音与单声道灯反复显示209PTVGFL7DTV无图象210PTVGFL7D保护，红灯亮211PTVGFL7D打火212PTVGFL7D三无213PTVGFL7D三无214PTVGFL7D无PIP215PTVGFL7D更换CRT冷冻液216PTVGFL7D会聚一段时间后变坏217PTVGFL7D3条回扫线可见在屏幕的上方218PTVGFL7D高压线连高压帽219PTVL7.154KQ4401/93B三无，红灯闪，喇叭发出卟卟声220PTVPTV221PDPF21RU自动开机（更换E—BOX里SSP上位号7002零件）222PDPFM23无图象且红灯在闪烁223PDPFM23不能启动，或开机即保护224PDPFM24无图象且红灯在闪烁225PDPFM24不能启动，或开机即保护226PDPFTV1.9227PDPFTV1.9010241435310624（14592）164520000004884228CRT21A9/B9高压打火229CRT21E821E8录不上音频信号230CRT21GX3566/93S21D9保护，待机灯闪231CRT21PT238A/93开机时红灯闪，1-5分钟后电源才启动232CRT21PT2521/93R个别频道无伴音的改善措施233CRT21PT3932/93R音量0-1基数大234CRT25L9.1低频段干扰235CRT25L9.1更改LOT事宜236CRT25/29B9关机色斑237CRT25H825V721B9SMART部分元件清单238CRT25H8II25A625V7II29S829A625V821V821B925B929B9部分元件清单239CRT25PT4324/93S更换LOT事宜240CRT25S8音量开低时，有高频啸叫241CRT25S829S8音量开低时，有高频啸叫242CRT25SX8661/93R/93T29SX8671/93R/93TG8机芯LSP和SSP的更换243CRT2