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December 14, 2019, 02:10:10 PM

Author Topic: Resistance Check for No. 28 [resolved]  (Read 1412 times)

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Offline Sugar Man

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Resistance Check for No. 28 [resolved]
« on: September 17, 2015, 09:26:06 AM »
The manual says 0.  I'm reading .433 Kohms.  Everything else checked out fine.  On 28L there is a resistor from B5 and a drain wire.  Nothing on 28U.
« Last Edit: September 17, 2015, 12:29:11 PM by Caucasian Blackplate »
Mike "Stein" Ayotte

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Elekit TU-8600 300B w/Lundahl Trannies
Audio Note R Zero II Phono Pre
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Stereomour II w/ Jupiters
Eros w/ Mundorf Silver Oils
Paraglows (retired)
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Offline fullheadofnothing

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Re: Resistance Check for No. 28
« Reply #1 on: September 17, 2015, 09:44:13 AM »
Did you paint your chassis?
Joshua Harris

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Offline Sugar Man

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Re: Resistance Check for No. 28
« Reply #2 on: September 17, 2015, 10:30:25 AM »
Yes.  Powder coated top and bottom.
Mike "Stein" Ayotte

Current Gear:

Elekit TU-8600 300B w/Lundahl Trannies
Audio Note R Zero II Phono Pre
Rega RP8 w/ Audio Note IQ3 (MM)
Audio Note E Speaker Kit-04 w/ AlNiCo drivers

Stereomour II w/ Jupiters
Eros w/ Mundorf Silver Oils
Paraglows (retired)
Quickie w/ PJCCS
Blumenstein Orcas & Subs

Offline fullheadofnothing

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Re: Resistance Check for No. 28
« Reply #3 on: September 17, 2015, 10:56:06 AM »
The terminal strip is supposed to be grounded to the chassis. Your paint is insulating it and needs to be scrapped off. This applies to any central terminal of a terminal strip with any connections. All places with bare metal against the chassis are assumed to be electrically connected to the chassis and it is important to confirm that they are.
Joshua Harris

I Write the Manuals That Make The Whole World Sing
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Offline Sugar Man

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Re: Resistance Check for No. 28
« Reply #4 on: September 17, 2015, 11:37:04 AM »
Well that is a substantial problem as the build is complete and the powder coating is not coming off very easily at all.  Is there a work around I can do?  Would I have to then do this to 13, 18 & 28? And the No. 8 screw/solder tab by the power cord?  Anywhere else? Can I scrape off the paint next to those areas and solder the terminal base to the bare metal?  Thanks.
Mike "Stein" Ayotte

Current Gear:

Elekit TU-8600 300B w/Lundahl Trannies
Audio Note R Zero II Phono Pre
Rega RP8 w/ Audio Note IQ3 (MM)
Audio Note E Speaker Kit-04 w/ AlNiCo drivers

Stereomour II w/ Jupiters
Eros w/ Mundorf Silver Oils
Paraglows (retired)
Quickie w/ PJCCS
Blumenstein Orcas & Subs

Offline Paul Birkeland

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Re: Resistance Check for No. 28
« Reply #5 on: September 17, 2015, 11:44:19 AM »
  Is there a work around I can do?
No, anything you do to "simulate" these connections may present a safety hazard or create a noise problem.  It isn't impossible to remove the screws in the pertinent areas, then scrape underneath them with a chisel or small knife.

Would I have to then do this to 13, 18 & 28? And the No. 8 screw/solder tab by the power cord?
Yes.

Anywhere else?
I don't believe so.

Can I scrape off the paint next to those areas and solder the terminal base to the bare metal? 
Soldering to aluminum is very, very difficult to do.  You have to deal with the oxide layer and you have to use a solder without tin in it.  In addition to this, when you get the plate hot enough to actually get a joint, you'll burn the powder coating right off on the other side of the panel. 
Paul "PB" Birkeland

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Offline Sugar Man

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Re: Resistance Check for No. 28
« Reply #6 on: September 17, 2015, 11:57:34 AM »
Well, it looks like a-scrapin' I will go.  Thanks for the quick replies.
Mike "Stein" Ayotte

Current Gear:

Elekit TU-8600 300B w/Lundahl Trannies
Audio Note R Zero II Phono Pre
Rega RP8 w/ Audio Note IQ3 (MM)
Audio Note E Speaker Kit-04 w/ AlNiCo drivers

Stereomour II w/ Jupiters
Eros w/ Mundorf Silver Oils
Paraglows (retired)
Quickie w/ PJCCS
Blumenstein Orcas & Subs

Offline Sugar Man

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Re: Resistance Check for No. 28 [resolved]
« Reply #7 on: September 17, 2015, 02:07:30 PM »
Okay, all 0's are 0's now except for 33 and 43 which read O.F.  Neither of these has anything hooked up to them so I did not scrape off paint there.  47 and 48 also read O.F.  I'll wait to voltage check until I get the go ahead that these numbers are kosher, especially since my 10 year old just played the packet of gum that shocks you trick on me.
Mike "Stein" Ayotte

Current Gear:

Elekit TU-8600 300B w/Lundahl Trannies
Audio Note R Zero II Phono Pre
Rega RP8 w/ Audio Note IQ3 (MM)
Audio Note E Speaker Kit-04 w/ AlNiCo drivers

Stereomour II w/ Jupiters
Eros w/ Mundorf Silver Oils
Paraglows (retired)
Quickie w/ PJCCS
Blumenstein Orcas & Subs

Offline Paul Birkeland

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Re: Resistance Check for No. 28 [resolved]
« Reply #8 on: September 18, 2015, 12:24:28 PM »
Okay, all 0's are 0's now except for 33 and 43 which read O.F.  Neither of these has anything hooked up to them so I did not scrape off paint there. 
No worries there.
47 and 48 also read O.F.  I'll wait to voltage check until I get the go ahead that these numbers are kosher, especially since my 10 year old just played the packet of gum that shocks you trick on me.
Your readings are consistent with what's in the manual.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Sugar Man

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Re: Resistance Check for No. 28 [resolved]
« Reply #9 on: September 20, 2015, 04:56:57 AM »
Thanks, PB.  With the go ahead I plugged her in and all the voltage tests were spot on, so another Stereomour II is up and running, dead silent and singing!  Wow!!!  :o
Mike "Stein" Ayotte

Current Gear:

Elekit TU-8600 300B w/Lundahl Trannies
Audio Note R Zero II Phono Pre
Rega RP8 w/ Audio Note IQ3 (MM)
Audio Note E Speaker Kit-04 w/ AlNiCo drivers

Stereomour II w/ Jupiters
Eros w/ Mundorf Silver Oils
Paraglows (retired)
Quickie w/ PJCCS
Blumenstein Orcas & Subs

Offline Paul Birkeland

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Re: Resistance Check for No. 28 [resolved]
« Reply #10 on: September 20, 2015, 03:50:40 PM »
I like the color choice for the top plate!
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man