tag:blogger.com,1999:blog-63326238106685508042024-03-06T11:57:47.011+08:00吉鵬音響工作坊Hi-End音響裝機、改機、維修與PA工程設計。Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.comBlogger540125tag:blogger.com,1999:blog-6332623810668550804.post-48000094394812374452024-02-23T09:26:00.000+08:002024-02-23T09:26:08.341+08:00Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-12355493239660306792023-11-02T04:32:00.001+08:002023-11-02T04:32:17.325+08:00郭董赴美國的成名作, Macintosh 512k
1984跟在台的代理商購買,保持到現在.<div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM1Pmx79uDdEqSFOT3jdMBWndPgkgllDuBeZPaskxoaZgyL4y_A29UwY9EIbGoZYgnPbBqveeEKmbYaqhXQR6d1gsAxkDBQEd_UIYO98fj8KWSRXVYX9BtRiMs5p4_udJt-w5XxJXTVHeOod9Uda4L3Es7tWEmv5n2coQFVoQ-KMx5q7oA0z-OHLPPgTP3/s4847/_MG_8313.JPG" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="400" data-original-height="3207" data-original-width="4847" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM1Pmx79uDdEqSFOT3jdMBWndPgkgllDuBeZPaskxoaZgyL4y_A29UwY9EIbGoZYgnPbBqveeEKmbYaqhXQR6d1gsAxkDBQEd_UIYO98fj8KWSRXVYX9BtRiMs5p4_udJt-w5XxJXTVHeOod9Uda4L3Es7tWEmv5n2coQFVoQ-KMx5q7oA0z-OHLPPgTP3/s400/_MG_8313.JPG"/></a></div><div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhT0k28k5nA5f5UWJxEXtCKC4ZTzYZy9uTqlHxOBlSaD1iWAb4L6_bqGxPpLlBdqSuj9E5awO_GySzO50vwLi_ZM_mhslm6GufZ61rJuYFXPbxDk9hpuVDATzaF_9K2ZTYehnjCM28gUQCeu_6Af0MG8-5VCkNKAKfHoVZOboz_5j9GP9FNBhW-5sYWH2jB/s5184/_MG_8314.JPG" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="400" data-original-height="3456" data-original-width="5184" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhT0k28k5nA5f5UWJxEXtCKC4ZTzYZy9uTqlHxOBlSaD1iWAb4L6_bqGxPpLlBdqSuj9E5awO_GySzO50vwLi_ZM_mhslm6GufZ61rJuYFXPbxDk9hpuVDATzaF_9K2ZTYehnjCM28gUQCeu_6Af0MG8-5VCkNKAKfHoVZOboz_5j9GP9FNBhW-5sYWH2jB/s400/_MG_8314.JPG"/></a></div><div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqtd0t6bu3tmZo5BNJqhI4VhNHYEncGtCEccCdM2bfcxr6M0T9t3We0tm31oZAdReH9XO-dbHGkiYt0mFvF4iVZ7ni1ZOrMUXvlENavns97lrYFaZmwZW91vpQ7-r7anTyNNepHgwz-SBABSv5-62k2kOb9FAUNJdL1h2CWsyYSN5DOGlkUD7ae3u_A4t0/s5106/_MG_8315.JPG" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="400" data-original-height="3362" data-original-width="5106" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqtd0t6bu3tmZo5BNJqhI4VhNHYEncGtCEccCdM2bfcxr6M0T9t3We0tm31oZAdReH9XO-dbHGkiYt0mFvF4iVZ7ni1ZOrMUXvlENavns97lrYFaZmwZW91vpQ7-r7anTyNNepHgwz-SBABSv5-62k2kOb9FAUNJdL1h2CWsyYSN5DOGlkUD7ae3u_A4t0/s400/_MG_8315.JPG"/></a></div>Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-58627453886348843362023-03-23T17:24:00.000+08:002023-03-23T17:27:37.946+08:00[Repair] A R C Phonopre PH-1 A R C Phonopre PH-1
美製唱頭放大.原毛病是記時45秒訊號會接上.
TIMER換IC延持電容33UF16V,10M電阻.
可以恢復正常.
隔天再試.放大就有問題.開機後10分種有一聲道
會變小,用1KHZ,100HZ,都一大一小....
把高壓穩壓281.7V提高到285.6V,這開機1小時都
沒改變.沒想到的隔天再試問題又來....
晶體非永不磨損,它也是有壽命的.....
5天已過放棄!!!
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美國製造前級擴大機.
這是早期的前級約1979年的. 高壓穩壓用 矽晶體及741OP做穩壓...
20幾個.故修了很久.CJ0
放大管子 12AX7,6管.簡單很容易就懂原理.
只得從較新的線路來改造.換了一堆零件...
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高壓276V正常.燈絲6.4V正常.
45秒的繼電器正常.15分後,
高壓上有不規則震盪出現.再過20分,
穩壓晶體溫度升高了可正常工作.但是竟看到
高壓PCB旁有細微的紅火花出現.......關機加一個0.01UF的電容
並高壓上.隔天再測.
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輸出100w以上,輸入級放大,XLR,RCA階可.
再接4組D類放大,作平衡輸出.所有電壓測試
一遍,都沒問題.SET,MUTING,WORD 鍵,沒作用.
內部全都是微形零件比一台電腦還複雜.
找代理商更換PCB.
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80WX2.PC板被換掉.8顆6L6GC,4顆12AX7,
不是原來線路.高壓穩壓不見,黃色交連電容不見
配線很糟,電解電容也有問題.觀查結果.唉!已40年了.
再見!
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高壓442V,12AX7輸入放大,直交 12AU7倒相放大.
容交給EL34.推動OUTPUT,輸出約30W
輸入VR竟是12K,這有點不妥,太低了.
左右聲道誤差%2以內.還可以.
整體頻響有靠電容調整.這比較重要啦!!!
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300B燈絲不亮.高壓還有.
拆底盤,上蓋,高壓整流板,徹底撿查.
使用環形變壓器,已燒燬.
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Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-65515815199254999582022-11-17T15:54:00.004+08:002022-11-17T15:54:58.238+08:00[Repair] Accuphase E-202 Accuphase E-202 日製綜合擴大機.
時日已久,開機後有時繼電器可接上喇叭.
響一陣以後有熱度以後,會跳開不響.
明日開機又會響,不久又會停機.
唉!有一聲道輸出有-29V壓.
SI晶體也是有壽命限制.包括整流器,定壓二極體,
電容.要更換的零件太多,拆,換花很多時間,
修理費用會很高.放棄修理吧.
就算這問題解決,用一陣子,還有開關,VR......等.
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Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-1930902571738032072022-09-22T03:09:00.001+08:002022-09-22T03:11:34.425+08:00[Repair] LUXMAN SQ38FDII 3LUXMAN SQ38FDII
日本製造的機子.比較特殊的是使用的管子50CA10,6267,6AQ8.
這都是用在電視機上的高頻管.對音質來講就有不同的表現.
用耳來聽就可知道
輸出有30W.這也足夠了.高壓440V,CHOCKE,電阻壓降給推動級,
前制音控,唱頭放大.
看面板,開關很多,而且很粗壯,控制範圍很廣.
AC117V輸入.也有付木頭外箱.
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法國製造的後級,兩台.
KT88,X4,12AX7,X2,高壓460V,有陰極電阻,沒有高壓穩壓.
很重約33KG.
一台在桌上,一台在地板上,播放.
下面照片是1987年拍的,新買的Jadis JA-80,和ARC SP-11.
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Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-24775104660313996282022-05-09T00:33:00.000+08:002022-05-09T00:33:05.934+08:00[Repair] SONIC FRONTIERS SFS-80SONIC FRONTIERS SFS-80
加拿大製造的後級.
6922 X4, KT90 X4.
1100UF/350V X4
高壓至540V,輸入是用6922串疊,加420V的晶體穩壓.
底下的恆流源用2N4400.可惜不能調整電流大小.
就輸出,容交給KT90輸出.肥會迴授到6922-輸入端,
精簡的放大線路.不過很難修.6922要挑選.
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已繼尾聲.試聽到CD報消,趕緊買一台藍光SonyBVD,
加 Wadia-32 Dac 來應急....
費時20天總算完成,可移交給客戶 : 陳先生
第一級,第二級都是差動級,且兩級直接交連,
6DJ8直交6SN7,再用朔膜電容容交6550CX4.
30幾年進步到甚麼程度.
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Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-7026262449301724822022-04-24T20:05:00.000+08:002022-04-24T20:05:49.535+08:00[Repair] LUXMAN CL-30LUXMAN CL-30
日本製造的前級,也是很古老的前級.
保持良好,有兩個唱頭放大,一組晶體的,一組管放大...
我的感覺,內部開關實在很多,,,,如果開關壞了?難找啊!
時間那麼久了.還好客戶講的VR的一條線斷了,重新接上,
竟然恢復過來......看到波形.
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Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-20605945432048773702022-04-18T02:26:00.000+08:002022-04-18T02:26:51.453+08:00[Repire] GoldenTubeAudio SEP-1GoldenTubeAudio SEP-1
美製前級,也是用2mm厚的鐵殼機箱,很有重量....
只有一顆6922的管子,推動兩個輸出變壓器.
有高壓穩壓,晶體穩壓.
燈絲看起來很亮,竟然是7.8V AC點燈...哇.
柵極輸入端竟有-1.4V偏壓,這...
加兩個陰極電阻試試.加兩個濾波電容試試,沒問題了.
但是只要電表的探針碰到PC板,波形又一邊變小了...
輸出變壓器又壞了.
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Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-45668710622949822572022-04-11T17:55:00.001+08:002022-04-11T17:55:39.194+08:00[Repair] Kora Stereo DACKora Stereo DAC
220V AC INPUT.
兩個12AX7的管子,解碼IC:PIC16F630.
燈絲穩壓:LM7806,量起來有5.9VDCOUT.
屏極高壓240V.有平衡輸出,RCA輸出.
4組的數位輸入.
檢查時間:24時,檢查費用:1000元NTD....
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Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-64510623361762220182022-03-27T04:44:00.002+08:002022-03-27T04:46:15.473+08:00[Rebuild]TAMURRA F 2011 (2)拆掉重裝.恢復電源原有高壓,負壓,穩壓板.
只為輸入級的6922管子,
這只能找舊PCB來改裝.
兩片比較就可瞭解.原本是電影院擴大機前級板子.
花兩星期,重新制造.只因阻值,容值,要重辛算過......
裝到交連電容,這關係到音質,層次表現,到現在還沒著落.
機箱31年前的,不是重畫過的,您家那台就是2003年重畫過.
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Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-50988270515277517762022-03-12T14:21:00.001+08:002022-03-12T17:55:26.276+08:00[Repair] YBA -DT 綜擴YBA -DT 綜擴
法國製造,晶體綜擴.高壓:+-37.6V,
8個輸出晶體,線路結構精良,零件等級優良.
1998生產,輸出約 50W.
這次只是開機後有一聲道會矇矇怍響?雜訊.
拆檢兩天解決了.還好晶體沒燒!
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Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-65988891458988067772022-02-28T23:38:00.000+08:002022-02-28T23:38:51.717+08:00[Rebuild] TAMURRA F2011TAMURRA F2011 日本大牌輸出變壓器.
為這顆來重製一台31年前的擴大機!
還記得這是1990年生產的.由堅新的外殼,電源,CHOCK,可證明.
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美國製造的後級.約30KG重.
300B X4,6SN7 X2,12AX7 X2.8管組合放大線路.
拆開量,發現陰級電阻已燒毀,再量輸出變壓器,
哇!也燒斷啦!沒戲唱了!
重繞變壓器後再說...<div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/a/AVvXsEgbOff9lAU-PpyqJC6AHLMiVVFWZEF8-RWnLwSNpqWmZMZXaNpeIT78UDbe7tY7XC_Wl70p-S4C5puBwHlPcRKqtaEeP3ZquJkgfIuZVjq-_D5peSWV_rqHbJmZwQLtVph5E0onsKfP3iyCKUwhXy1NPLGKdo01v0JNjTQcKTNDiYjx3wgZTZzJt3miyA=s5128" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="600" data-original-height="3184" data-original-width="5128" src="https://blogger.googleusercontent.com/img/a/AVvXsEgbOff9lAU-PpyqJC6AHLMiVVFWZEF8-RWnLwSNpqWmZMZXaNpeIT78UDbe7tY7XC_Wl70p-S4C5puBwHlPcRKqtaEeP3ZquJkgfIuZVjq-_D5peSWV_rqHbJmZwQLtVph5E0onsKfP3iyCKUwhXy1NPLGKdo01v0JNjTQcKTNDiYjx3wgZTZzJt3miyA=s600"/></a></div><div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/a/AVvXsEj1s1U87CbpdpPZs1U9-IXHRqpINNqksW2mabVbV_dU2ZLfT5GXgutjmdBY9A2xkNo7KDOhpd3t00vEdMOhXY0N1LTocNp5rp0N08CFOHJdICDAtyXWHFYXAXEPqYjyYkHzOxSm7uy7L4H3_pU4-you-U-9XmQy8LUUT78EkUTKXrHiQdXUoQH6d7WKaw=s5184" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="600" data-original-height="3456" data-original-width="5184" src="https://blogger.googleusercontent.com/img/a/AVvXsEj1s1U87CbpdpPZs1U9-IXHRqpINNqksW2mabVbV_dU2ZLfT5GXgutjmdBY9A2xkNo7KDOhpd3t00vEdMOhXY0N1LTocNp5rp0N08CFOHJdICDAtyXWHFYXAXEPqYjyYkHzOxSm7uy7L4H3_pU4-you-U-9XmQy8LUUT78EkUTKXrHiQdXUoQH6d7WKaw=s600"/></a></div><div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/a/AVvXsEiFj7NyykWPluPhuAHTebwt51FUluRE0KmYYXGM5MeDmfJOTpblxydQs84m2fP2_xkiSBcsUbl9w_ort1ufduyrfGvCwljOUKHTzR0MVLxjH4-wYz7Z6Z4XU7t1lmBZTbOdlo9P9WZGpSV5d1PbRRwiLDUISwMUAgpyqcv7ixr6c_LvikDrC5ygoTyO1A=s5075" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="600" data-original-height="2983" data-original-width="5075" src="https://blogger.googleusercontent.com/img/a/AVvXsEiFj7NyykWPluPhuAHTebwt51FUluRE0KmYYXGM5MeDmfJOTpblxydQs84m2fP2_xkiSBcsUbl9w_ort1ufduyrfGvCwljOUKHTzR0MVLxjH4-wYz7Z6Z4XU7t1lmBZTbOdlo9P9WZGpSV5d1PbRRwiLDUISwMUAgpyqcv7ixr6c_LvikDrC5ygoTyO1A=s600"/></a></div>Getpoint Leehttp://www.blogger.com/profile/13278813569230701560noreply@blogger.com0tag:blogger.com,1999:blog-6332623810668550804.post-6362816723951825152022-02-13T17:27:00.000+08:002022-02-13T17:27:47.341+08:00[Repair] JADIS DA50JADIS DA50
法國製造的綜合擴大機,在台灣擁有很多愛用者...
都有30年的歷史.
消除哼聲,一聲道不響,加強人聲弦樂的解析度,
還好輸出OUT沒壞.5天就可完修.........
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數位電源,不會有哼聲.
但用插件式零件,有損壞就要找代理商買零件...
或找代理商維修,比較妥當...
檢查了電壓,4組沒問題. 檢查ac訊號的前進
到紅色匡還有1.7v輸出,再過晶體放大兩組.
訊號就不見?無法換零件.無法修了....
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這些中階機種也不是省油的燈.一樣是煥然一新.
SP-11,1986年出,SP-9,1987年中階跟著出.不用PHONO也有 LS-1,
可選,都不會相差很多.哈!
全機裏的兩個電解電容壞了一個,換一個就解決了...
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1986美國製造的前級,尤其是Phono.連A.R.C.本廠製造的PHONO1,PHONO3,
音質都比不上的...
這台零件很多,管晶混合的最佳代表!
已維護30台以上!!!想不到我已70歲.
電源有拆開檢查,沒問題.迴授音量開關,隨壓調整的電阻,壞的都在這裏.
拆啊拆,換啊換.又一台重生!
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