Recent Posts

61

Mainline / Re: Mainline Questions

« Last post by Tabaia on March 24, 2025, 07:19:31 PM »

hence no info added about the direction in the manual

62

Mainline / Re: Mainline Questions

« Last post by Tabaia on March 24, 2025, 07:18:39 PM »

great , thank you.

63

Stereomour II / Re: Right Channel Hum

« Last post by Paul Birkeland on March 24, 2025, 07:02:12 PM »

I think what would make sense is to put the amp back to pre-shunt regulator status and just be sure everything still works under those conditions. 

64

Mainline / Re: Mainline Questions

« Last post by Paul Birkeland on March 24, 2025, 07:01:30 PM »

Resistors are not directional.

65

Mainline / Mainline Questions

« Last post by Tabaia on March 24, 2025, 06:35:35 PM »

Hello , I am just staring on the Bias / Regulator board, first stumble is the 499 ohm resistor - which way up/down?
Yellow on the top or red on the top?

66

Stereomour II / Re: Right Channel Hum

« Last post by thoven0215 on March 24, 2025, 03:38:55 PM »

It was the 2.49k ohm 1/4 W resistor that goes into R3 on the big circuit board. I replaced it after that smoking happened along with the TL431 and the resistor measures at about 2.39k ohms right now.

67

Stereomour II / Re: Right Channel Hum

« Last post by Paul Birkeland on March 24, 2025, 02:36:09 PM »

I stated that the resistor next to the capacitor on the B side started to smoke

Which resistor? Which terminals does it connect to and what's its value?

68

Stereomour II / Re: Right Channel Hum

« Last post by thoven0215 on March 24, 2025, 02:22:02 PM »

Please let me know if more pictures are needed. One of the pictures is with the amplifier powered on in order to see the LEDs. The other two are with the amplifier off.

69

Crack / Re: Bottlehead issue after changing chassis

« Last post by Paul Birkeland on March 24, 2025, 12:41:35 PM »

I don't know what "only changing the chassis" means.  Did you just remove the amp from its wood base and put it in a different wood base?

70

Crack / Re: Bottlehead issue after changing chassis

« Last post by Applemacman on March 24, 2025, 11:35:08 AM »

Seems strange to me since i only changes chassis and it was ok before the change. However thanks for the response I will go through this and recheck it late this week and report the results. Thank you for the advice