Its not that the 64s is more bass heavy than the FX, it's just that the FX is very light weight and more nervous throughout the range; its - to me- far too 'screechy' and handles transients badly. Having said that I must say that I only ever used it on a well set-up Thorens 124 - and that with decent MC cartridges incl. an FR 701. But the V15s are far more forgiving. I am not surprised that you like the SME....within a few limitations it is a good arm with V15.
You have a couple of very good decks there!!!
You have a couple of very good decks there!!!
First time I've had chance to look at this over the last few days, thanks everyone for the suggestions, I've put a probe on point 'S' with the probe ground on 'O' and I cannot get a waveform, I then put it on point 'T' this seems to display the correct waveform however the time isn't correct on this and will not adjust down far enough.
Click on the image to make it bigger.
Those are not in any way the "correct" waveforms. I don't have an actual screen shot, but what you see here is representative. I usually adjust the T position to intersect the S position.
As I've said and posted those are the wave forms I'm getting from point S and T unless I'm missing something?
Yes, but I don't know what. As we have all said many times now, you need the waveform shown, until you get that there is nothing more I can do. What you are showing, is as if your scope is showing nothing at all, there is no waveform as it should be, no signal, nothing at all ? It would not be rotating if that was the case.
Right I think I've got it? Different from last night, first is point S on channel one, yellow trace, second on point T blue trace, these were with the probes on one at a time, third pic when both probes connected again yellow on S and blue on T.
Attachments
They need to be like the illustration I provided, was the turntable running when you took those ?
Yes the table was turning when the above was taken, I CANNOT get the waveforms to display as per the service manual.
OK, I'm stuck then, all the 50+ I have serviced had the correct waveform, the wrong timing often if not always, but the correct waveform never the less.
tear-down starts...
Progress..(well, a little).
So the tear-down of the better looking SP10 MKII started well. Apart from looking like small animals have nested in the case (not really!) and a couple of bottom cover screws and couple of pcb screw heads giving way necessitating using a micro-screw extractor (which worked fine btw), looks very much un-touched since new.
Date of the motor is 7th Nov 1980.
Attached is some of the tear-down pics i'll later use for re-assembly/reference.
This is the less-corroded one of the two. Cosmetically, it should be pretty straightforward to sort. Not decided yet but likely to get it bead-blasted back to bare aluminium and either polished and clear-coated again or go down the powder-coat/paint route. I have some experience/contacts with classic bike parts and getting them re-painted so should stand me in good stead when it comes to it.
Chris.
Progress..(well, a little).
So the tear-down of the better looking SP10 MKII started well. Apart from looking like small animals have nested in the case (not really!) and a couple of bottom cover screws and couple of pcb screw heads giving way necessitating using a micro-screw extractor (which worked fine btw), looks very much un-touched since new.
Date of the motor is 7th Nov 1980.
Attached is some of the tear-down pics i'll later use for re-assembly/reference.
This is the less-corroded one of the two. Cosmetically, it should be pretty straightforward to sort. Not decided yet but likely to get it bead-blasted back to bare aluminium and either polished and clear-coated again or go down the powder-coat/paint route. I have some experience/contacts with classic bike parts and getting them re-painted so should stand me in good stead when it comes to it.
Chris.
Attachments
After much desoldering TR129 is on the control circuit board is shorted its a 2sc828a, anyone know the replacement for these?