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[#70] etsang3 修理 Marantz 分享    
211兄,師傅教我,膠爆左,要從新"啤過"先夠力喎。
嘩!做個公模"啤過"咩!"啤過"意思係從新溶化D膠使裂口再融合埋一齊,不過大爆口用辣雞辣得太耐一般妘ㄦ|縮,所以要加膠辣,要用雙同膠料(475,ABS)或可能要雙同顏色添,否則不能融埋一齊。辣完一舊舊就用苳M或沙紙做後期工作,手術高明,整完連裂過都睇唔到。
點知係乜膠料? 師傅教我燒(辣)膠料聞下,唔同膠料有自己獨特味道。
去邊度搵膠料? 我成日行街見到D塑膠垃圾,清潔,顏色特別,都會整碎帶些少返屋企,以備不時之需。(哈哈,正垃圾佬一名)
etsang3
個人訊息 會員
219.xxx.xxx.148
2008-10-06 01:49
[#71] etsang3 修理 Marantz 分享    
SoundOfMusic hing. I think it is due to bad contact or aging inside the amp. There are Noise Problem fixing report on the web. There are so many parts need be replaced. Terrible. I have 2 power amps fixing now. If you still want me to help to repair and you can wait. Pls PM me la.

Thanks.

換電容
http://amp8.com/sansui/au555-20000/jpeg/au990031l.jpg
換漏電原子粒
http://amp8.com/sansui/au555-20000/jpeg/au990031t.jpg

(網站: http://amp8.com/sansui/au555-20000/au9900-4.htm)
etsang3
個人訊息 會員
219.xxx.xxx.148
2008-10-06 01:53
[#72] etsang3 修理 Marantz 分享    
Calvin1800 hing,
用什麼東西洗面板,可以甘乾凈?

我用開稀 KLEEN (百佳買,1:3),要徹底過水乾淨,唔係日後面板會"發白"
etsang3
個人訊息 會員
219.xxx.xxx.148
2008-10-06 01:59
[#73] etsang3 修理 Marantz 分享    
Thanks, etsang3 si-fu. Pls check pm.
SoundOfMusic
個人訊息 會員
61.xxx.xxx.249
2008-10-07 12:51
[#74] etsang3 修理好聲"山水"機一部    
HI etang3 hing

I found my old NAD amp give distortion sound in both channels, and the display flash when plug-in power. Would this the cause of drying out of the reservior cap? Or any area I should noticed?

THX in advance.
wo
個人訊息 會員
58.xxx.xxx.186
2008-10-12 02:50
[#75] etsang3 修理好聲"山水"機一部    
Wo hing, for NAD amplifier, failure of FilterCap may be the cause of the, Change-over power supply (when the music louder , the signal switch on another power supply of to supply higher voltage to output stage.
Also, malfunction of "Soft-Clip" circuit may also cause distortion. Try switch soft-clip ON and OFF to compare the sound.
etsang3
個人訊息 會員
218.xxx.xxx.82
2008-10-12 11:21
[#76] etsang3 修理好聲"山水"機一部    
Good morning etsang3 hing

Great Hint!!

almost forgot the "soft clip" circuit.

I suspect 10000uF filter cap but it look perfect, no sign of leak or swell, try switch off the soft clip and replace filter cap first.

THX
wo
個人訊息 會員
219.xxx.xxx.157
2008-10-12 12:48
[#77] etsang3 修理好聲"山水"機一部    
After unplug the NAD amp for a week, without replace any parts. Sound come normal and nice again, strange!! Problem of reley??
wo
個人訊息 會員
219.xxx.xxx.22
2008-10-25 10:19
[#78] etsang3 修理好聲"山水"機一部    
Wo hing, please check (LOOK) from this direction for parts condition and soldering.
Power Plug -> power cord -> power cable clip entry hole -> power switch of amplifier -> power fuse holder -> transformer wire soldering ->rectifier -> Big filtering cap soldering and connectors to the power amp PCB.
I am afraid the problem will only happen when the current flow is prolonged and that problem point is heated up.
Also, please try to knock on the amp without playing a music to see if there is any abnormal noise.
etsang3
個人訊息 會員
202.xxx.xxx.193
2008-10-27 13:25
[#79] etsang3 修理好聲"山水"機一部    
estang3兄 請問你以前講的safetycable燈泡要用多少W呢?thanks
devilangel
個人訊息 會員
218.xxx.xxx.178
2008-10-29 12:06
[#80] etsang3 修理好聲"山水"機一部    
devilangel hing,

前級50W,後級100W啦。應該OK。
etsang3
個人訊息 會員
202.xxx.xxx.193
2008-10-29 19:31
[#81] etsang3 修理好聲"山水"機一部    
etsang3 兄,
我想問Audio Reserach ぇe Sp6-B 你介唔介意幫我整??
1/Mode selector 個掣鬆鬆地, 有時唱唱下有一僱L.
2/ phono 播放時有一零i si 聲, 喇叭單元向前向後狂郁, 但又有時無事...
THX!
edwardfkw
個人訊息 會員
222.xxx.xxx.6
2008-10-29 20:26
[#82] etsang3 修理好聲"山水"機一部    
edwardfkw hing,

Please check PM. Thanks
etsang3
個人訊息 會員
218.xxx.xxx.251
2008-10-30 00:38
[#83] etsang3 修理好聲"山水"機一部    
i cant get your PM
therefore, I send e-mail to you
THX~~
edwardfkw
個人訊息 會員
203.xxx.xxx.36
2008-10-30 19:48
[#84] etsang3 修理好聲"山水"機一部    
I got an amplifier, 110v, want to make it 220v, how much please. Please PM. Thanks.
bbqiller
個人訊息 會員
219.xxx.xxx.236
2008-10-30 22:51
[#85] etsang3 修理好聲"山水"機一部    
estang兄 safetycable條thread係乜 重有冇? thanks for your great works!
devilangel
個人訊息 會員
219.xxx.xxx.122
2008-10-30 23:17
[#86] etsang3 修理好聲"山水"機一部    
好! 大家安全最重要,修理用上呢條cable會加倍安全。

etsang3
個人訊息 會員
203.xxx.xxx.119
2008-10-31 09:20
[#87] etsang3 修理好聲"山水"機一部    
bbqiller hing, I missed your question.
What amp you want to change from 110V to 220V ?
If the transformer primary side is multi-taps it cab be changed otherwise need to change the Transformer.
etsang3
個人訊息 會員
203.xxx.xxx.215
2008-11-01 21:06
[#88] etsang3 修理好聲"山水"機一部    
唉!部AU-D9又番鷑,發覺燒鑆ower管,無理由100零mA BIAS會燒power管假,細看原來都係Remark貨。我幫襯開果間(好似轉鬫挐)都賣remark貨,真失望。
換過哂 D On-Semi power管,又再Boom..Boom..Boom..鰲X粒鍾,明天可以call機主囉機苤C
<<請認住呢D假,7DY?大細字?)

etsang3
個人訊息 會員
219.xxx.xxx.82
2009-01-31 01:15
[#89] etsang3 修理好聲"山水"機一部    
On-Semi MJL1302/MJL3281 ,Mark機都用,十分好聲,聲音好通透,因為fT高,比Sanken管好D。Farnell有得買又唔貴
。最重要肯定係正洁C
http://hk.farnell.com/jsp/search/browse.jsp;jsessionid=D54HC4DFKSQB2CWNBBS1YFQ?N=0&Ntk=gensearch_001&Ntt=MJL1302&Ntx=&_requestid=76753

etsang3
個人訊息 會員
219.xxx.xxx.82
2009-01-31 01:21
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