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3571

General Discussion Area / Re: Hifi speakers

« on: 01 November 2016, 21:17:31 »

That seems like a lot of money to destroy for a less-than-£5 control, STEMO! You have also duplicated all of the information I sent earlier.....
Anyway, it would still be very helpful to have as clear a photo or photos as possible to try to match a generic device from parts suppliers like RS, Rapid, Farnell and the like. Does the control solder directly to that volume board, or is it link-wired to it? It matters because the terminals will be different in each case.
For your information, the control is a 2-gang, 100kOhm logarithmic potentiometer, without switch - they often incorporate a switch to turn an amplifier on, but that wears the control out prematurely and yours, luckily, doesn't do that.

Ron.

3572

General Discussion Area / Re: Hifi speakers

« on: 01 November 2016, 15:19:39 »

I'll do my best for you, but it would help if you could photograph the control to give me some idea of its physical size and shape, etc. Inclde a small rule in the picture, if possible?

Ron.

3573

General Discussion Area / Re: Hifi speakers

« on: 01 November 2016, 14:45:59 »

If the crackling has returned, your volume control is probably beyond help and you need to source a replacement; the motorising bit is irrelevant, as it's just an add-on, yes?
I think the Dropbox version of that manual has parts missing, but I was unable to send the full PDF on here. Go to Akai-AM-M459-Service-Manual.pdf - Adobe Reader. All of those dashes may not be needed, but Google will find it!
It's worth trying eBay, etc., for a generic control as Akai won't be the manufacturer but will want a second mortgage for a replacement.

Ron.

3574

General Discussion Area / Re: Hifi speakers

« on: 01 November 2016, 10:36:05 »

Found it!
Tucked away, not in the main cirduit diagram but a subsidiary one - twin gang 100kilohm potentiometer. It didn't specify logarithmic, but as your ears are logaarithmis, it must be!

Ron.

3575

General Discussion Area / Re: Hifi speakers

« on: 01 November 2016, 10:24:56 »

I'm glad you've got your music back!
Manual, Page 14:-
 
8. VOLUME P.C. BOARD

Ref. No.     Part No.         Description

VR101       EV-383734J     VR SPL RK16Y12MAK104X2
                                    [VOLUME]

I cannot find the actual resistance value of the volume control anywhere, but it ought to be marked on the control itself, and will almost certainly be a logarithmic-law potentiometer.


Ron.

3576

General Discussion Area / Re: Hifi speakers

« on: 31 October 2016, 13:40:24 »

The cure will not last forever; the control will need to be replaced. Did you note the details on the Potentiometer - value, Part No. etc?
The Akai Part No. is listed in the PDF manual I linked you to, along with the volume control PCB layout - Page 24, bottom right hand corner.

Ron.

3577

General Discussion Area / Re: Hifi speakers

« on: 30 October 2016, 21:02:38 »

Yes, soldering required! Does that frighten you? The volume control is usually connected to the printed circuit by wires, so fairl easy, but may sometimes be mounted directly on to the circuit board directly - still not difficult.

These may help:-

https://www.youtube.com/watch?v=9ZxNtxOoeWA

https://www.dropbox.com/s/jikvrckq4b4ucw3/Akai-AM-M459-Service-Manual.pdf?dl=0


Ron.

3578

General Discussion Area / Re: Hifi speakers

« on: 30 October 2016, 20:32:20 »

Might I suggest a good dose of switch cleaner on the volume control of the amplifier before you spend too much money? Then work the cleaner in by operating the volume control from end to end (power off!) several times.
If that works, it will be a short term cure until you can replkace the volume control itself.

Ron.

3579

General Car Chat / Re: Question for the experts

« on: 30 October 2016, 18:40:13 »

I get nothing but rudeness on here, ever since I owned up to once owning a Wartburg!
Still, you do get a better class of insult here.....

Ron.

3580

General Car Chat / Re: Question for the experts

« on: 30 October 2016, 13:43:00 »

Doctor Opti, considering how many parts of me seem to be reminding me of that fact, I think you are right! However, in my defence, I bought one of the last models that were made when Phelon & Moore went into liquidation and sold their remaining stock through George Clarke in Brixton, south London - memories, anyone?
That bike nearly broke my ankle when, one sleepy morning, I forgot to engage the half-compression lever (650cc single cylinder, if you didn't know) and kick-started it: it kicked back, and I limped back upstairs to bed, no work for me that day!

Ron.

3581

Omega General Help / Re: Starter not always engaging

« on: 30 October 2016, 09:02:21 »

May I add a caveat if anyone intends to spray this or any PTFE-laden product near hot engine parts, especially exhaust parts, as when exposed to temperatures above around 300 degrees centigrade it breaks down and produces toxic fumes.

Ron.

3582

General Car Chat / Re: Question for the experts

« on: 30 October 2016, 08:24:44 »

I am bemused, too!
The only gearbox Ihave ever had apart was a Burman box from my old Panther motorbike and even that was complex enough for this amateur, but I simply cannot see that it could be cost-effective, even if this bloke were clever enough, to do it in situ.
As we all know, the major part of workshop costs is labour time, and it surely must take longer and be more awkward to try to jiggle things about from underneath the car whilst it is on the ramp than to dismantle it with the gearbox on the workbench?
I also await more expert opinion.....

Ron.

3583

Omega General Help / Re: Starter not always engaging

« on: 29 October 2016, 21:01:54 »

Thanks, TB. We DO have one such old-fashioned shop in our high street, they sell almost everything. However, I fear to enter usually because it must be run by Auntie Wainright, judging by the prices!

Ron.

3584

Omega General Help / Re: Starter not always engaging

« on: 29 October 2016, 19:25:40 »

Glad to be able to help. I got mine from Wickes, can't remember the price, but there is also another PTFE spray that I got from a boot sale years ago (no maker, sorry, as I used it all and dumped the empty can), which contained a totally dry PTFE powder for where solvents are inapproproate. My best use was on the plastic runners that my double-glazed windows slide on; they run as smooth as silk and no nasty oil to collect sticky debris in the channel!
My difficulty?
As I said, I don't recall who made it, to buy more.....

Ron.

3585

Omega General Help / Re: Starter not always engaging

« on: 29 October 2016, 18:01:21 »

The PTFE (teflon) version is true magic, yes. If the engagement pinion is sticking on the shaft, this stuff will clean the sh1t from it and leave a very low-friction PTFE coating which is electrically non-conductive, so no harm done if you overspray onto the starter motor electrics.

Ron.