Bottlehead Forum
Bottlehead Kits => Moreplay => Topic started by: SeeRockCity on April 04, 2024, 03:51:14 AM
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Be gentle, this is my first kit build.
Have just completed wiring my Moreplay, but with some funky resistance results:
ground 22
1 OL
2 0
3 22
4 OL
5 OL
6 OL
7 OL
8 22
9 OL
10 OL
11 OL
12 0
13 22
14 OL
15 OL
16 OL
17 OL
18 22
19 OL
20 OL
21 OL
22 22
23 0
24 OL
25 22
26 198
27 22
28 OL
29 OL
30 OL
31 396
32 22
33 OL
34 OL
35 22
a1 ok
a2 132
a3 OL
a4 OL
a5 OL
a6 OL
a7 132
a8 OL
b1 OL
b2 132
b3 OL
b4 OL
b5 OL
b6 OL
b7 132
b8 OL
Heaters work
B+ test passed (330v)
I prodded and poked a bit but have no idea where to go from here. I made a bit of a mess of the input switch the first go around. I neglected to read ahead and wired the outer terminals across the top and not around the outside. This made wiring up the pots a bit of a challenge. I've since fixed it, but you can see the pot wires are a little....er....melty. I decided NOT to replace them since it would have required de-soldering a couple of those 3-wire pot connections and the insulation does not appear to be burned through.
I was able to confirm proper ground on all RCA jacks using the selector switch and performed a bunch of continuity checks (all good). I re-flowed a couple of joints because... well not sure why.
I'm kind of stuck as to next steps.
Pics:
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Can you tell us more about your meter? It doesn't seem to want to resolve much over really low resistances, so it's possible that it's just not set to the right position. If you have a meter with manual resistance range selection and you have it set to something like 200 ohms, then you'll be able to see the terminals that are supposed to be 22 Ohms, but anything over 200 ohms will appear as "OL".
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Can you tell us more about your meter? It doesn't seem to want to resolve much over really low resistances, so it's possible that it's just not set to the right position. If you have a meter with manual resistance range selection and you have it set to something like 200 ohms, then you'll be able to see the terminals that are supposed to be 22 Ohms, but anything over 200 ohms will appear as "OL".
Thanks Paul. Great question. I had the same thought; that there was something wrong with the measurer and not the measurements :)
I have an Etekcity A1000
The manual is pretty light but I did review the section on measuring resistance just to see if there was something along those lines. As far as I can tell it is supposed to "auto" set the range. I tried changing the range using the range button, but it didn't seem to have any effect. I tried the same exercise with a cheap(er) little handyman meter that I had lying around and got similar results. That unit DOES have a range setting for resistance, but changing it didn't seem to have much affect on the nodes marked "*".
Still not convinced it's not user error.
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It should be very, very easy to measure 10K between the front and back lugs on the top level of the volume pot. If you can't resolve that resistance measurement, 99% of the time that would be the meter. If at all possible, try setting that blue meter to the 60K range and see what happens.
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It should be very, very easy to measure 10K between the front and back lugs on the top level of the volume pot. If you can't resolve that resistance measurement, 99% of the time that would be the meter. If at all possible, try setting that blue meter to the 60K range and see what happens.
New development...
I have learned that if you know how to use a multimeter you will have a much improved chance of measuring things with it.
I may have to spring for one with an actual manual. Thank you for the nudge.
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Thanks for coming here first before disassembling your kit in frustration!
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She Floats!
Initial impressions are between Wow! and Blown away.
Thank you for the help.
For those of you following along, short version - RTFM.
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Thanks for coming here first before disassembling your kit in frustration!
Lol, I'm sure that happens.
The troubleshooting is where the learning happens.