...i scored a Morley deluxe flanger MOD-FLB...no wet signal...is anybody around here have a schematic diagram?
tnx in advanve guys!
Morley has a lot of their schematics for free on their site, try google.
..lots of Morley schem on google but no luck..can't find the MOD-FLB deluxe flanger...maybe i'll just post the voltages on key points on my morley..and ask for help from you guys..tnx
Yeah should be able to check for anything obvious with voltages, the schematic will be useful if you have to audio probe though, I might have it, but it'll be a few days before I check
..oh tnx scruffie...really appreciate it.
Hopefully it's not the BBD. They soldered those directly to the PCB on those models.... and its the SAD1024 :o
Lacky you should know better than to encourage suspecting the BBD is bad as first port of call...
..hey guys..good thing my Morley flanger's SAD1024A is socketed... ;D
Quote from: Scruffie on March 19, 2015, 03:35:54 PM
Lacky you should know better than to encourage suspecting the BBD is bad as first port of call...
:-[
It was not by design. I was looking up the info and all of the gut pics I saw were with the BBD soldered directly. It is quite rare to see that.
As always... rule out EVERY possible source BEFORE calling the BBD dead. Looks like the bypass runs on the good old "remove the delayed portion of the signal" routine. I would start there and ensure that the switching is working properly.
On a side note... I was able to find a schematic for this device however, it was hand drawn and had an MN3007 in it. :-\
Morley Flanger voltages...
SAD1024
pin1 0 pin16 0
pin2 2.6 pin15 2.6
pin3 5.5 pin14 2.6
pin4 0 pin13 5.5
pin5 0 pin12 0
pin6 0 pin11 0
pin7 11.1 pin10 5.5
pin8 5.5 pin9 11.1
CD4047
pin1 0 pin14 11.1
pin2 11.1 pin13 0
pin3 4 pin12 0
pin4 11.1 pin11 5.5
pin5 11.1 pin10 5.5
pin6 11.1 pin9 0
pin7 0 pin8 0
MC34043P
pin1 5-11 pin14 5.8
pin2 4.8 pin13 5.8
pin3 4-6 pin12 5.8
pin4 11.2 pin11 0
pin5 5.8 pin10 5.8
pin6 5.8 pin9 5.8
pin7 4-6 pin8 5.8
TLO74
pin1 7.3 pin14 2.6
pin2 7.3 pin13 2.6
pin3 7.3 pin12 2.5
pin4 11 pin11 0
pin5 5.7 pin10 2.6
pin6 5.8 pin9 2.6
pin7 5.8 pin8 2.6
14007UB
pin1 -2.4 pin14 11.1
pin2 -2.4 pin13 11.1
pin3 7 pin12 11.1
pin4 4.1 pin11 11.8
pin5 4.1 pin10 5.7
pin6 0 pin9 5.4
pin7 0 pin8 0
SAD1024 socketed !
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xtf1/v/t1.0-9/10277478_823937354345279_7830557154668995643_n.jpg?oh=2ce8a20f4dab173ff9af761b0b848525&oe=55763F5F&__gda__=1433611012_08d59410444b289c92bfca7880dcaefe)
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/10475711_823937171011964_7986752169885675144_n.jpg?oh=b324b8eb7f49fbffcedf8c59723c7c97&oe=55785540&__gda__=1434062072_fd9192a3cfe0ff19f98224c7bd23d1e4)
Well.... Looks like you are getting a clock into the SAD1024 however, it does not look like anything is coming out at all (Pins 5, 6, 11, and 12 are all 0)
Also.. something is wrong with the MC3403P. You should be seeing 0V on Pin 11.
Scruffie might have a better idea on this as I think he might have the schematic.
Gov'...you're right..it should be 0v...my mistake...tnx...
The fact that there is NO voltage on any of the SAD1024 outputs leads me to believe you definitely have some issues there. Your clock voltages look off as well.
A schematic would help.. :-\
11V seems like an odd supply voltage so to start, assuming it has a regulator, what's the part number?
I don't have the SAD version schematic it seems but for now let's assume the 3007 version is close and it should be a 9V regulator... could be faulty.
..yes scruffie it has a regulator 78L09...and my power source says its 9V..but has an 11.22v reading on my digital multimeter...
A 9V regulated supply? Seems low for a MN3007/SAD1024 based circuit. What is the voltage of the power supply?
I guess I just "ASSumed" that this was a 15 or 12V circuit that ran on external PS or dual 9V battery setup.
If this circuit is biased for 9V operation and the regulator has failed and is putting out 11V+ then that "could" be at least part of your problem.
If we assume the 'deluxe' line ran off 12V (this was probably before the BOSS 9V standardization and most higher voltage pedals of the SAD1024 days ran off internal transformers) and it needed a good steady voltage, 9V makes sense, both the 3007 & SAD are happy at it.
So first replace the 78L09 and see what the voltages are like afterwards, at the moment they're kinda... odd.
Center pin of the regulator does not go to GND so a different voltage than 9v can be expected on the output pin.
Does in the schematic i'm looking at for the 3007 version, if it's different on the SAD PCB though I don't know.
..i replaced the 78L09 regulator but still no flanging...my power source is 11.57dc volt input...and the output pin of the 78L09 is 9.4v...pin 2 of the 78L09 says 2.29v....tried 2 batteries (not fresh..total voltage=15v) then 78L09 output pin reads 11.2v..still no flanging...i adjusted the trimmers..still no flanging...
the LFO seems to work i think because the led indicator blinks and changes speed as i turn the speed knob...
by the way...78L09 center pin is not connected to ground on this SAD version...same with the MN3007 version..