Ibanez - PH-5 Phaser [schematic]
- analogguru
- Old Solderhand
Information
sorry, i have only a hand drawn (traced) schematic of the PH5, but the Ibanez PT9 schematic is nearly identical to the PH5.
https://www.freestompboxes.org/viewtopic.php?t=188
analogguru
https://www.freestompboxes.org/viewtopic.php?t=188
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
- swt
- Breadboard Brother
looks like it's got a fixed stage before and after the sweeping stages right?, so is this a 6 stage phaser?. can someone explain how that feedback works?. It's going to the - and+ inputs of the opamp...excuse my ignorance...
- Dirk_Hendrik
- Old Solderhand
Information
http://www.dirk-hendrik.com/temp/ibanez_ph5.pdf
And C25 is a 22n. In it's own labelling as well as on the Fluke87
And C25 is a 22n. In it's own labelling as well as on the Fluke87
- analogguru
- Old Solderhand
Information
OhOhOh.... I think we have different units.
The FETs in mine are 2SK246GR.
C25 IS marked 47n in mine (not measured).
CR1 + CR2 are (not gooped) a 100k with a 1n ceramic in parallel.
ZD1 I noted as 4V7 (ZD 2 maybe too) - I have to recheck that.
The rest appears to be the same.
analogguru
The FETs in mine are 2SK246GR.
C25 IS marked 47n in mine (not measured).
CR1 + CR2 are (not gooped) a 100k with a 1n ceramic in parallel.
ZD1 I noted as 4V7 (ZD 2 maybe too) - I have to recheck that.
The rest appears to be the same.
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
- Dirk_Hendrik
- Old Solderhand
Information
Nope we don't
I meant C24.
Which I had to check in turn in a PT9 since the PT9 service manual says it's a 2n cap.
right on the Fet's though
Seriously interested in that discrete version of the CR's. Is that both components soldered on the same pads?
PCB-PH5-1010A
I meant C24.
Which I had to check in turn in a PT9 since the PT9 service manual says it's a 2n cap.
right on the Fet's though
Seriously interested in that discrete version of the CR's. Is that both components soldered on the same pads?
PCB-PH5-1010A
- analogguru
- Old Solderhand
Information
As you may know, for my friend dirk I would nearly do everything. So I did some sports and moved away more than hundred pedals for grabbing the Ibanez PH5 to take a shot of the discrete CR´s.Dirk_Hendrik wrote: Seriously interested in that discrete version of the CR's. Is that both components soldered on the same pads?
Here it is - from a 1996 pedal:
Also I took a picture of the C24 - yes it is 22n too: The I thought, maybe I should better control the zener-diodes, could be a mistake by me, but both are 4V7 - here is ZD2: Then I thought, maybe this new stuff..... so I opened one from 1991 - you can recognize this on the different resistors. But still, ZD 2 is 4V7: Very interesting.... and ZD1 ? Ooops..... It is 4V7 too.....
The 1991 pcb is marked PCB-PH5-0101A only on the component side.Dirk_Hendrik wrote: PCB-PH5-1010A
The 1996 pcb is marked PCB-PH5-0101A on both, the track and component side.
BTW.... How is the prosperity of the aeroplanes ?
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
- Dirk_Hendrik
- Old Solderhand
Information
Fine. Those work according to the maintenance manual and Parts list. No way to deviate from thoise, even if what is described makes little to no sense.analogguru wrote: BTW.... How is the prosperity of the aeroplanes ?
analogguru
I have one this pedal but "speed" control does not work. I have added resistor 1Meg from pin 2 to pin 6 on IC TL022 and it starts working. But I'm not sure what is wrong and if my fix is OK. Does anybody have similar problem? Or any ideas what is wrong? Thanks.