- #1170 [hahayanyan], 21-02-24 00:30Wow good sharing... Thxx
- #1169 [info2k], 21-02-24 00:15幾年前已退休的國內大師"江湖大佬", 曾在新浪微博帖文分享, 維修開卷及收音機的經驗, 值得一看獲益不少
http://blog.sina.com.cn/s/articlelist_1854308177_0_1.html - #1168 [hahayanyan], 21-02-23 13:53My Teac x2000 就是這個白老鼠
斷帶試過.... 離開head是否不能play.. Etc.. 種種種種的.. Also happened
Haha 好彩最後唔知點解搞掂咗 haha... -
- #1167 [Akaigxc], 21-02-23 13:43張力調整錯誤，會導致扯斷帶，或加重磁頭及磁帶磨蝕，又或者不能緊貼磁頭而導致錄放音完全失效
- #1166 [真正用家], 21-02-23 13:39張力多或少會影響聲音那部分？
- #1165 [Akaigxc], 21-02-23 13:32張力調整，涉及專門的工具及測試儀器，service manual必定有清楚說明，問題係，那些工具及儀器，係廠方的維修設備，就算係當年，坊間都好難買齊買到，何況係今天，所以，這個調整唯有自己做白老鼠，自己估估下做實驗了
- #1164 [真正用家], 21-02-23 09:20感謝
- #1163 [hahayanyan], 21-02-23 09:14first... Wait for akaigx for professuonal advice
通常嚟講維修及服務手冊裏面會講出一部機主要幾個地方嘅推力及拉力要求
通常來說使用 合規格的拉力計, 按照服務及維修手冊裏面的指引 去作出這個調整 - #1162 [真正用家], 21-02-23 09:06張力點先調先正確？
- #1161 [fotheringay], 21-02-23 06:40As discussed, how good the performance of your R2R depends of the speed, tension of the tape and alignment of the tape with the heads, and of course the others.
As for the co-relations and practicality I could not go further as it is too techical for me and I am afaid I am that I am not the right person to answer.
Is it possible to adjust the tension? I would love to know.
最後修改時間: 2021-02-23 06:44:10 - #1160 [fotheringay], 21-02-23 06:19I presume yours is a PR99 and I think it's Tension Lever and it seems a different design from a B77.
Is it something to allow you to adjust the tension?
Perhaps Akaigxc Hing may be able to put us in the right direction.
最後修改時間: 2021-02-23 06:32:31 - #1159 [真正用家], 21-02-23 00:39見后面有個隆仔，又可轉得，有咩用途呢
- #1158 [真正用家], 21-02-17 20:52未正式測試
- #1157 [hahayanyan], 21-02-17 10:31hi 真正用家
how's those new bearing ?
haha - #1156 [hahayanyan], 21-02-15 22:49大家一起學多一點點
Haha - #1155 [真正用家], 21-02-15 22:43謝謝指導
- #1154 [hahayanyan], 21-02-15 21:30Ic4 seem it is for the peak indicator light ( the blink blink red light)...at the VU meter
So it does not affect playback or even recording
If the light at the VU is always on... Which means a 高手幫你飛咗線
If never on... Then it is normal.. As it does not have that OP
最後修改時間: 2021-02-15 21:36:57 - #1153 [真正用家], 21-02-15 21:15>> REVOX PR99 << Output Amplifier PCB Reel to Reel Part 1.177.880 /RD286
- #1152 [真正用家], 21-02-15 21:13IC4位置（欠少一塊4558）
不清楚用途，望能指導
- #1151 [hahayanyan], 21-02-15 20:04如果你知道呢個係ic4558
咁樣你即係睇過線路圖, 喺邊一塊 pcb?
such as it is used for the mic preamp..., u never use that function..so u never know...etc
such as ...it is an optional part for other function... ..
as u can playback... ... make sens to think it is not related to playback function in a critical manner
have u record ?
可能性有幾個...a few more...
最後修改時間: 2021-02-15 20:19:19 - 下一頁 (1 of 59)
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