Resistance Check Failed [resolved]

chuotcon15 · 2327

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Offline chuotcon15

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on: December 06, 2016, 10:13:10 AM
Building the Mainline for 3 days and it was failed on the resistance check.
I got a result like this.

1. 215 ohm
2.
3. 2 ohm
4. 3 ohm
5. 3 ohm
6. 2 ohm
7.  1 ohm
8. 5 ohm
9.
10. 1 ohm
11. 2 ohm
12.
13. 2 ohm
14.
15. 216 ohm
16. 3 ohm
17.
18. 2 ohm
19. 221 Kilo-ohm
20. Greater than 200 Kilo-ohm (i guess because my Ohm meter has max scale is 200 Kilo-ohm)
21. 2 ohm
22. 222 Kilo-ohm
23.
24.
25. 219 ohm
26. 2 ohm
27.
28. 2.1 ohm
29.
30. greater than 200 kilo-ohm (guessing)

Having check careful every join.
Any advice from you guys. Thank you very much.
« Last Edit: December 14, 2016, 02:37:01 PM by Caucasian Blackplate »



Offline Paul Birkeland

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Reply #1 on: December 06, 2016, 10:49:21 AM
You've left a lot of these blank, what do the blank ones read? 

You have a TON of terminals that are measuring as though they are grounded, but they aren't supposed to be.  Is there any way you can post some photos of your build?  I would say that you may have an issue of something that you think is reading "2 Ohms" actually being higher (22K or 2.2K), but you have other resistance readings that are in the thousands of Ohms.

Whatever you do, do not apply power to this Mainline, it's not ready yet.

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline chuotcon15

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Reply #2 on: December 06, 2016, 11:53:41 AM
I got a wrong measure on T1 and T5. T5 is 215 ohm instead of 3 ohm and T1 is 3 ohm. The T24, I got about 2 ohm. For others Terminals, I did not give the result because they did not connect or grounded.  All the terminals measure, which are supposed to be 0 ohm as grounded, I got the reading correct because I lput the measure meter level at 200 ohm.
You know, my measure meter is the cheap one that I got about $7, brand name ETEKCITY. When I put the red and black lead touching, it reads about 0.6 Ohm, but it is supposed to be 0.
« Last Edit: December 06, 2016, 12:05:13 PM by chuotcon15 »



Offline chuotcon15

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Reply #3 on: December 06, 2016, 11:57:58 AM
I do not know why the site was not let me post the photos.
« Last Edit: December 06, 2016, 12:06:31 PM by chuotcon15 »



Offline Paul Birkeland

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Reply #4 on: December 08, 2016, 10:36:20 AM
The 14.7K resistors that go from T1 and T5 to the fine level control can be measured in circuit.  Put the black meter probe on one side of one of these resistors and the red probe on the other, then let us know what the meter reports.

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline chuotcon15

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Reply #5 on: December 08, 2016, 01:59:53 PM
Thank you for your reply.
I just realized that I got a misunderstood from the manual guide. The manual guide mentions Terminal 1 (T1) through Terminal 10 (T10) likes this photo below.

If that is correct, so I got at T1 39.9 KOhm and T5 39.8 Kohm. Anything else is still the same the result in the first report, but for those grounded the measure showed 0.6 Ohm. I tried to put the Red and Black lead of the measure together, it showed 0.6 Ohm. It is so weird. Waiting for your answer. Thank again.



Offline chuotcon15

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Reply #6 on: December 09, 2016, 12:16:10 PM
I have done with the Mainline. The sound is amazing comparing with my Crack. Now, I am thinking about upgrading the Caps for it. Thanks everyone for helping especially Mr. Caucasian Blackplate.



Offline Paul Birkeland

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Reply #7 on: December 14, 2016, 02:36:51 PM
If that is correct, so I got at T1 39.9 KOhm and T5 39.8 Kohm. Anything else is still the same the result in the first report, but for those grounded the measure showed 0.6 Ohm. I tried to put the Red and Black lead of the measure together, it showed 0.6 Ohm. It is so weird. Waiting for your answer. Thank again.
Yeah, 0.6 Ohms would be the resistance of the meter leads.  39.9 and 39.8K are good values to get at terminals 1 and 5.

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man