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Post by sq225917 on Dec 13, 2020 14:06:02 GMT
Ah, forgot he'd using those psu boards.
Never the less, the lead outs come off the transformer correctly ordered, so the outer two wires are the outer two on the psu boards and the middle two are the centre tap.
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Deleted
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Post by Deleted on Dec 13, 2020 15:19:55 GMT
I have connected them up correctly in the order they come out, but I will check before I power the amp on that they are correct.
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Post by sq225917 on Dec 13, 2020 19:15:10 GMT
I've built, a 686, 4x 486 and 6x 86p, all dual mono with toroidy, all the same wiring order.
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Post by karma67 on Dec 13, 2020 19:17:36 GMT
I've built, a 686, 4x 486 and 6x 86p, all dual mono with toroidy, all the same wiring order. you may be building another 686 in the new year  |
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Deleted
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Post by Deleted on Dec 14, 2020 8:22:51 GMT
A parcel from Calgary is arriving today...
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Post by jimbo on Dec 14, 2020 8:50:49 GMT
I've built, a 686, 4x 486 and 6x 86p, all dual mono with toroidy, all the same wiring order. What is the 486? |
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Deleted
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Post by Deleted on Dec 14, 2020 9:15:04 GMT
A parcel from Calgary is arriving today... Make that tomorrow, as although I have a Fedex account, they need a cheque to be able to deliver. The wife has the cheque book with her at work.  |
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Bigman80
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Post by Bigman80 on Dec 14, 2020 9:21:39 GMT
A parcel from Calgary is arriving today... Make that tomorrow, as although I have a Fedex account, they need a cheque to be able to deliver. The wife has the cheque book with her at work. Oh man...... These little delays are killing me. They must be driving you nuts! |
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Deleted
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Post by Deleted on Dec 14, 2020 9:23:32 GMT
I won't be able to install it until the new heatsink arrives, later this week anyway.
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Post by macca on Dec 14, 2020 9:39:44 GMT
They need a cheque? What's that all about?
I don't know about France but in the UK we don't accept payment by cheque anymore.
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Post by jimbo on Dec 14, 2020 9:47:58 GMT
They need a cheque? What's that all about? I don't know about France but in the UK we don't accept payment by cheque anymore. Customs duties. |
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Post by macca on Dec 14, 2020 10:03:51 GMT
Yes but there's no requirement to pay them by cheque?
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Post by jimbo on Dec 14, 2020 10:09:19 GMT
Yes but there's no requirement to pay them by cheque? You are right, you can pay them online. |
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Deleted
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Post by Deleted on Dec 14, 2020 10:11:23 GMT
Yes but there's no requirement to pay them by cheque? They have not sent me a link to pay online, and I have looked online. Even though they have my account number, and my bank card is up to date, I need to pay by cheque, otherwise the driver would not give me the parcel. |
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Post by firebottle on Dec 14, 2020 10:40:00 GMT
French banking is a little in the dark ages, however a cheque is as good as cash as cheques cannot be cancelled in France.
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Post by macca on Dec 14, 2020 11:40:57 GMT
Fair enough. I don't get onto the Continent much, I forget how different it is.
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Deleted
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Post by Deleted on Dec 14, 2020 16:47:37 GMT
I am happy to report that having checked the windings phases, they are indeed correct as to the order they leave the transformers, and they were connected correctly.
I have tested the first Power 686 board, and happy to say I get the power on led, and the voltages at the board output are correct.
Now I am going to wait at least 15 minutes before I put my hands back in the case, while the capacitors discharge.
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Deleted
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Post by Deleted on Dec 14, 2020 17:08:38 GMT
Power 686(2) now tested, and all good to go.
Thanks for the support so far. This was probably the step I am most uncomfortable with.
However, it is now done, and I am a happy chappy.
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Bigman80
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Post by Bigman80 on Dec 14, 2020 17:40:12 GMT
Power 686(2) now tested, and all good to go. Thanks for the support so far. This was probably the step I am most uncomfortable with. However, it is now done, and I am a happy chappy. Well done K!!!! |
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Deleted
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Post by Deleted on Dec 14, 2020 17:49:08 GMT
I have not yet provisioned for an earth tab.
I was thinking of using an M3 or M4 bolt, either through the "power tray" or directly through the bottom of the case.
The "power tray" bolts into the case, and I can check continuity/resistance to make sure it is acceptable.
Is this ok? or should I create a larger hole in the tray, and fit the bolt through the bottom of the chassis?
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Post by macca on Dec 14, 2020 17:49:11 GMT
On the home stretch now then.
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Deleted
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Post by Deleted on Dec 14, 2020 17:56:14 GMT
Still a bit to do, but I am definitely getting there.
If the heat sink arrives soon, I hope that by the end of the weekend, this will be up and running.
If the power is OK, the amp boards are already assembled so I don't need to test them.
I think the first test will be done using my FH3s, as I can replace the drivers relatively easy compared to my other speakers.
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bigbird
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Post by bigbird on Dec 14, 2020 18:42:12 GMT
I am happy to report that having checked the windings phases, they are indeed correct as to the order they leave the transformers, and they were connected correctly. I have tested the first Power 686 board, and happy to say I get the power on led, and the voltages at the board output are correct. Now I am going to wait at least 15 minutes before I put my hands back in the case, while the capacitors discharge. Well done mate. Any pictures of the order and how you’ve connected it as it may be helpful for me to eye it up before my upcoming build in a few weeks time ? Tar |
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Deleted
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Post by Deleted on Dec 14, 2020 18:59:35 GMT
Not yet.
I can take one, but basically, you look at the order the wires come out of the transformer,, and connect them up to the power board in that order, with the two central wires in the two central positions.
I would recommend doing a proper test as per the instructions that Alan gave me though, just to be 100% sure.
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Deleted
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Post by Deleted on Dec 14, 2020 19:52:55 GMT
 The best I can do until I take the heat sinks off. Secondary wire on the furthest left goes to the first connector on the Power686 board, and so on. I identified the centre taps with a bit of white heat shrink, which I have not shrunk. |
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Bigman80
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Post by Bigman80 on Dec 14, 2020 21:22:31 GMT
Haha! bigbird has all this to come lol Take some notes matey |
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Deleted
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Post by Deleted on Dec 14, 2020 21:44:34 GMT
I have quite enjoyed this so far. Nothing to be scared of, except the total cost....
2021 I plan to tackle my BB3, instead of just buying valves for it. A single case job.
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Bigman80
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Post by Bigman80 on Dec 14, 2020 21:50:05 GMT
I have quite enjoyed this so far. Nothing to be scared of, except the total cost.... 2021 I plan to tackle my BB3, instead of just buying valves for it. A single case job. good LCR meter, patience and careful matching for that job. |
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Deleted
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Post by Deleted on Dec 14, 2020 21:56:54 GMT
Or talk someone into matching the resistors for you?  |
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Bigman80
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Post by Bigman80 on Dec 14, 2020 22:08:45 GMT
Or talk someone into matching the resistors for you? oh man.....lol |
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