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| [#26340] Leak Club for Leakies or Leak user rsbn, What a small world of audio! ^^ |
rcwy 正式會員221.xxx.xxx.238 |
2012-04-05 08:34 | |
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| [#26341] Leak Club for Leakies or Leak user Heu Hing, So you can enjoy your resourcefulness! |
rcwy 正式會員 221.xxx.xxx.238 |
2012-04-05 09:05 |
| [#26342] Leak Club for Leakies or Leak user 請問各位leak c hing 我沒有玩過Leak 我想問Leak st 60 時價多少?有冇c hing cut love. Please pm me |
ray1229 正式會員 203.xxx.xxx.19 |
2012-04-05 15:38 |
| [#26343] Leak Club for Leakies or Leak user restoration  |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 21:58 |
| [#26344] Leak Club for Leakies or Leak user if i make misstake in restoration part. pls advice.  |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 22:05 |
| [#26345] Leak Club for Leakies or Leak user still have nosie on both amp. this is 1960 with 3920 main transformer and 3921 output transformer.  |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 22:09 |
| [#26346] Leak Club for Leakies or Leak user ready try on octal plug. still have nosie. Its from tweeter speaker.  |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 22:13 |
| [#26347] Leak Club for Leakies or Leak user this is 1959 year main transformer 3920R output transformer 3921, other component and board are same. |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 22:15 |
| [#26348] Leak Club for Leakies or Leak user I make appologize. I had miss overlooked the page 873. I had try the octal plugs with shunt resistors , noise still there. I will try on disconnect the earth wire from power to amp later. hope can solve the noise problem. |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 22:23 |
| [#26349] Leak Club for Leakies or Leak user Try to replace the 0.25 TCC caps with Russian PIO. It wouldn't cost you arm and leg. |
rsbn589 正式會員 115.xxx.xxx.157 |
2012-04-05 22:27 |
| [#26350] Leak Club for Leakies or Leak user Try to replace the 0.25 TCC caps with Russian PIO. It wouldn't cost you arm and leg. --------------------------------------- KY, Heu, Bad coupling caps would case red hot plates of EL84's. Any such sign? Russian PIO is not my cup of tea in sonics anyway. :) If noise is consistent like 50/60Hz hum, it is normally due to smoothing caps instead. If it is sporatic noise heard at times or sometimes, it is somewhere else or something else. Do the right diagnosis and give the right treatment. Cheers! 最後修改時間: 2012-04-05 22:45:25 |
rcwy 正式會員 221.xxx.xxx.238 |
2012-04-05 22:44 |
| [#26351] Leak Club for Leakies or Leak user "I had try the octal plugs with shunt resistors , noise still there." Heu, What values are the shunt resistors? |
rcwy 正式會員 221.xxx.xxx.238 |
2012-04-05 22:55 |
| [#26352] Leak Club for Leakies or Leak user "still have nosie. Its from tweeter speaker." It sounds like "white noise"... likely from very old carbon resistors in the power amp AND in the preamp. If it is indeed white noise which comes from the pre-amp, too high input sensitivity of the power amp could magnify the noise from the pre-amp making the noise intolerable and is the culprit. So, the value of the shunt resistors may be significant in your case. 最後修改時間: 2012-04-05 23:03:51 |
rcwy 正式會員 221.xxx.xxx.238 |
2012-04-05 23:00 |
| [#26353] Leak Club for Leakies or Leak user Heu, Regarding whether you need to change the caps, measure voltage at the grids of EL84's. What are the value in Volt(s) against ground (chasis)? Normally, grid against ground should measure ZERO volt. If it is +1 or above, the vintage TCC coupling caps are leaky. Replace them with modern PIO's, like those from Jensen, etc. that will not cost an arm and a leg too. ^^ 最後修改時間: 2012-04-05 23:20:48 |
rcwy 正式會員 221.xxx.xxx.238 |
2012-04-05 23:13 |
| [#26354] Leak Club for Leakies or Leak user Had try the russian cap, its not my cup of tea. I more like the tcc 0.25. its poison my ear. |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 23:25 |
| [#26355] Leak Club for Leakies or Leak user the shunt resistors value is about 120K and 47K if i not make misstake. the plug ready return back can't measure. |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 23:29 |
| [#26356] Leak Club for Leakies or Leak user leg and arm ready cut lo, total restoration component part and learning cost can purchase another 1 unit leak tl 12 plus. |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 23:34 |
| [#26357] Leak Club for Leakies or Leak user can I know what is the point or pin for the grids i can measure it. i have the 12 plus circuit diagram. can found it from the diagram? |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 23:36 |
| [#26358] Leak Club for Leakies or Leak user i had removed the earth wire from power socket to amp, its a bit nosie reduce, aleast hear and feel more comfortable. will have more testing first to confirm it |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 23:42 |
| [#26359] Leak Club for Leakies or Leak user Its the grids of EL84s pin 7, 9 to output transformer pin 4,6, and 5, 8 ? I guess it. Very thanks to KY and Rcwy give a support. |
heu 正式會員 118.xxx.xxx.28 |
2012-04-05 23:47 |
