Post by sub on Jun 1, 2019 22:02:28 GMT 12
Yes, did resistance check not only on the push on connectors of the small PCB, but also on the pins on the cross over, and both read 0.0
Just repeated that test now, same result. Does that mean the short is somewhere between L10 and the +tive pin for the upper MF? 
1,164 posts |
Post by Owen Y on Jun 1, 2019 22:17:33 GMT 12
It appears, a short between the +ve end of MF driver connection & -ve connector (Ground track somewhere).
DarkLantern blog - darklanternforowen.wordpress.com
7,244 posts |
|
Connoisseur
 Post by colinf on Jun 2, 2019 0:08:18 GMT 12
Here is a photo I found of the underside of the board. The connector is on the top right of the photo. L10 connects to the second pin from the right. That pin is next to ground on the 3rd, 4th and 5th pins. It would be very easy to have a small solder blob short out pin 2 to pin 3. Check around there on your board.
 AMR-iFi R&D
1,428 posts |
|
Administrator
 Post by Owen Y on Jun 2, 2019 9:23:31 GMT 12
I've highlighted in yellow, the 'gap' that colinf refers to...
DarkLantern blog - darklanternforowen.wordpress.com
7,244 posts |
Post by sub on Jun 2, 2019 10:13:54 GMT 12
Thanks all, great team work!
Will have a close look shortly. From R to L, the pins in order on mine are 1. Not connected 2. +tive to lower MF 3. +tive to upper MF 4. - tive to lower 5. - tive to upper 6 & 7 to HF 7. & 8 not connected
1,164 posts |
Post by Mike A on Jun 2, 2019 11:08:25 GMT 12
I take it that that is how the plastic connector is wired?
If so then move the cable at position 2 to position 1 and the cable at position 3 to position 2 resolder L10 and it should work... 
136 posts |
|
Connoisseur
Post by sub on Jun 2, 2019 12:51:40 GMT 12
Had a look at the photo I took before dismantling.
 looks same is at is wired now  Have been plugging connector box so that first, empty, socket, goes over front pin. To connect it so the green wire (+tive lower MF) goes onto first pin would leave a pin exposed and not connected to anything at the other end?!
1,164 posts |
Post by Mike A on Jun 2, 2019 13:07:04 GMT 12
Ok now I see what has been going wrong, plug the connector back in with the green wire at pin one on the board so that the empty socket hangs over the end and retest.
136 posts |
Post by sub on Jun 2, 2019 16:23:50 GMT 12
Oh dear, how many red faces should I be showing!
MikeA was on the money, green wire meant to have gone to pin 1! Managed to solder L10 securely back onto the board, even though it didn’t look pretty! When everything put together, the ohm reading across the upper MF terminals was 2.0. Just now hooked speaker into the system, and everything is working as it should. A major learning experience, and I mostly enjoyed it. I can almost disassemble these speakers and put them back together with my eyes closed - in fact I must have had them closed when hooking the connector box back up to spkr A! Loved the input from everyone, just shows how great this forum is. Great heals from all
1,164 posts |
Post by Mike A on Jun 2, 2019 17:12:31 GMT 12
Excellent news
136 posts |
|
Connoisseur
Post by colinf on Jun 2, 2019 18:53:34 GMT 12
Haha surprise! I can’t say I’m immune from that sort of stuff either, cleaning connectors and putting them back in the wrong pin position!
Well done all! Now: sit back and relax, enjoy the music.😀 AMR-iFi R&D
1,428 posts |
