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1: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-08, 03:07:02 (14.3.173.41)
Dear Sirs, I removed all components related to power filter, added new FET for Q3 / Q5, and resoldered everything. HUM is solved. Thank-you for your help. .......
2: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-07, 07:33:37 (14.3.173.41)
All points voltage checks ok Any other tips? .......
3: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-06, 20:41:59 (14.3.173.41)
Dear Michael, After shorting the input jacks, hum does not change. .......
4: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-06, 20:35:27 (14.3.173.41)
Dear Michael, Which point should i be checking continuity at the tube, one of the pins on the tube socket? .......
5: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-06, 20:34:02 (14.3.173.41)
I have replaced Q3 (did not replace diode) Still getting hum occuring on left channel. Also re-soldered every connection. Should i Also replace Q5? .......
6: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-05, 19:16:00 (14.3.173.41)
Thank-you I will replace Q3 and Q5 with 02N60Z Is there a specification for Zenner Diode, in assembly instruictions it is only refered to as Zenner Diode with no more detailed information. ::: TOPIC: .......
7: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-05, 19:14:57 (14.3.173.41)
I will replace Q3 And Q5 With 02N60Z Is there a special zenner i must replace with. TU-8200 instructions simply call it Zenner Diode with no further specification. .......
8: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-05, 19:01:38 (14.3.173.41)
Dear Sir, While checking your suggestions Q3 & Q5... I was double checking everything around this area and noticed that Zenner Diode ZD1 is allowing current to flow through both directions. Seems like .......
9: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-05, 17:46:20 (1.66.104.11)
Thank you I will check .......
10: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-05, 17:29:25 (1.66.104.11)
Hello I have not tried tube rolling, however I swapped the tubes on left and right side to see if it was related to the hum, however this made no difference .......
11: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-05, 17:00:46 (1.66.104.11)
Thank you. I will give this a try when I get home and let you know. I'm on power from west JP so 100v 60hz. Thanks for your help .......
12: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-05, 16:36:34 (14.3.173.41)
Hi Michael, Thanks for quick response.. Nope, i definately mean 240hz. Will try your suggestion see how it goes. Thank - you, .......
13: VK Music - Elekit & Triode Japan Forum, RE: 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-05, 16:23:54 (14.3.173.41)
Sorry I should say this is TU-8200 .......
14: VK Music - Elekit & Triode Japan Forum, 240hz hum through left channel (0.00)
Posted by LKP48 on 2016-09-05, 16:22:35 (14.3.173.41)
Hi, I have a slight 240hz hum coming through left channel after about 30 seconds of warming up. Changing volume up and down does not affect volume. I've checked and re-checked the soldering of R1-R3 e .......
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