review33.com: 影音天地: “開卷式錄音機”同好會

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[#1743] '開卷式錄音機' 同好會

THAT is really quite dynamic

粒粒清冇拖泥帶水... Not bad

聽得好過癮, good. Music

https://www.youtube.com/watch?v=Wa2_jOwm9Pc

最後修改時間: 2024-08-09 06:31:30

hahayanyan

正式會員
86.xxx.xxx.47

2024-08-09 06:28

[#1744] '開卷式錄音機' 同好會
其中一個原因喜歡玩這個東西

係畀我一啲實際嘅材料去學習

This A77, Capstan motor not running, End of tape bulb 唔著燈 = lost 21V

這個是學習維修的小學課程, 希望透過這個東西學習, 如果成功修復, 不需要問專家意見, 我就覺得自己升班喇

Haha

1) The transformer not dead, all secondary normal
2) 21V real dead dead
3) take up motor working, means d101 not yet dead,could not reach the point for further measurement to make, hence next step
4) need to remove solenoid and the take up motor, otherwise could not remove the pcb for further checking and fixing

Fun and 訓練耐性 and learning, 雖然這個機器都係幾千蚊, 可以學習嘅嘢價值高很多, 維修好東西有意義

hahayanyan

正式會員
86.xxx.xxx.47

2024-08-10 18:13

[#1745] '開卷式錄音機' 同好會
真係need 耐性,

再進一步要拆咗take up motor and brake solenoid, 先可以拆開呢塊pcb for further work

如果你哋玩開呢啲東西, 這些問題都是遲早的 haha 選擇嘅係自己搞定係, paid for services

Haha

最後修改時間: 2024-08-10 18:15:08

hahayanyan

正式會員
86.xxx.xxx.47

2024-08-10 18:14

[#1746] '開卷式錄音機' 同好會
Haha...

Some little and positive progress

Remove the hidden screw behind the solenoid... No need to remove the take up motor

Need to remove the top power socket bar (2 screw only) and the, otherwise the solenoid cannot be remove

似乎要unplug 27 V DC 一排電線.. pcb先係至可以褪到出嚟

最後修改時間: 2024-08-10 20:11:27

hahayanyan

正式會員
86.xxx.xxx.47

2024-08-10 20:08

[#1747] '開卷式錄音機' 同好會
That roll of cable and above..

About 19 wire to unplug

Pcb 背後仲有三組 secondary AC cable hard soldered to the back of the pcb... 安常理應該夠長, otherwise revox could not assembly it haha 但願如此

好準備好label先至做這件事

觀察點樣影清楚啲相... Haha before I remove those wires

這些經驗都是要慢慢累積才能減少錯誤

最後修改時間: 2024-08-10 20:16:50

hahayanyan

正式會員
86.xxx.xxx.47

2024-08-10 20:13

[#1748] '開卷式錄音機' 同好會
Remove 30 wires...

應該夠位做嘢...

Pcb 背後有11條線直接solder上去, 唔夠長拉出來, 但夠位做嘢, 做好定位應該唔需要整甩佢.. Haha

佢哋原本嘅安裝方法一定係連埋火牛這塊板...installed Together

today 要去做其他事情要停一停休息休息 for that ... Haha

真係要佩服細心全機翻新的發燒友, 唔簡單

最後修改時間: 2024-08-10 22:26:57

hahayanyan

正式會員
86.xxx.xxx.47

2024-08-10 22:25

[#1749] '開卷式錄音機' 同好會
Able to get back part of the 21 V,
end of tape bulb and sensor work now,

Capstan motor still not running,

and takeup right reel motor not running haha

hahayanyan

正式會員
86.xxx.xxx.47

2024-08-11 07:14

[#1750] '開卷式錄音機' 同好會
B77 MK2 ,可以參考相片。個3粒 new 電容 for capstan , left and right spooling motor

最後修改時間: 2024-08-11 23:34:19

dlld

正式會員
119.xxx.xxx.74

2024-08-11 23:33

[#1751] '開卷式錄音機' 同好會
Have ordered those cap and other components for a77, B77, A700. And 2 tracks machine from Teac and Sony

The B77 I have, is still good but end of each tape, speed not stable, I guess it is related to thsoe cap or other cap..

Am thinking let's go a few. Of few of them.. And get a Philips Or Telefunken, having a feeling I should not keep more than 4.. (I may have 8 or 9 now)

最後修改時間: 2024-08-12 01:47:20

hahayanyan

正式會員
82.xxx.xxx.227

2024-08-12 01:43

[#1752] '開卷式錄音機' 同好會
師兄請收PM，有部 Technics 1500搵你幫手

cylam

正式會員
1.xxx.xxx.163

2024-11-27 15:26

[#1753] '開卷式錄音機' 同好會
小弟早三、四年前左右第一次維修呢類機器，嗰部係Revox B77。整吓停下，整吓停下都搞咗大半年, 呢部機係二手由R33一個老人家手上買返嚟，八千幾蚊，但問題多多；不過我見佢咁嘅年紀，我就唔同佢講價錢了。

第二部搞嘅係Studer A807, 由完全摸不着頭腦，到知道部機來龍去脈7788，整吓停下，整吓停下又半年。對我來說，如果唔係自己得閒，識整同有時間，B77 如果多問題的話，真係唔值得投資時間或者金錢落去搞。

反而啲Studer, 因為始終係專業嘢，設計、零件、工藝，及方便維修的程度，B77完全冇得比。覺得Studer啲機相對真係值得俾心機及資源去整好佢。嚟緊將會買入及調整另外一部Studer： A-810…

最後修改時間: 2024-11-27 21:28:56

richmond168

會員
203.xxx.xxx.228

2024-11-27 21:25

[#1754] '開卷式錄音機' 同好會

Haha a new toy today

Got it for £10 from a senior gentleman, and it belong to his father

It is a tandberg 12/4

Visually it is almost new , one channel totally gone , and have clicking and regular noise from the dead channel

Very well made little deck