I normally loathe the thought of trying to find useful information from youtube videos. Was shocked and amazed at the quality of the content I found here, it was absolutely helpful to me and very much appreciated!
I really admire people like you who enjoy this kind of challenge! Great work and fascinating video! I'm envious of people, like you, who have such a wealth of skills and knowledge. :)
Great video I subbed, I just completed recapping my entire Mci 428 Console now I’m going on to recapping my pcm 60, spx 90, Effectron effects units. From there I’m going to recap my entire mci jh-24 tape deck. Lots of Digi-key ordering. Thank you for taking the time to make this video I know there’s a lot involved.
Wicked! Totally over my head, but enjoyed watching it for the anticipation of you actually fixing it and you did! Great job, super exciting! I wish I could do things like this...
Hello A question if you dont mind PCM42 supossedly has optical U15 + U14 dry signal limiters on the input Have you noticed these on the PCM60 The reason I'm asking is that PCM42s input when pushed makes a distinct distortion used by pros to saturate and give grit The PCM60 can do the thing too but I can't find a comparison anywhere and I don't have the units myself.
You went from the caps right to the eproms. I think you cut some stuff in between. Did you still have the ripple/noise and overvoltage after replacing the caps?
Pete Brown yes he thinks that every fault he checks the culprit is forever a cap in the power supply... then he starts to change components at random... read the service manual first, then grab the oscilloscope and use it!!! and use a signal tracer too to repair musical instruments!
Hi Pete, thanks for watching. I lost a few portions of the video due to poor audio, so some of the repair doesn't quite flow as well as I would have liked. Ripple was lower after replacing the caps. The caps were not the ultimate cause of the ADC issues of this unit, but any 30+ year old piece of studio gear will need them all replaced regardless so I did them first. I wanted clean supply rails for troubleshooting and wanted to get that terrible bodge out of it as well. As for the +5.4 rail, it did calm down after the capacitor replacement to around +5.1V. The +22 and - 22 test points I mentioned were introduced in REV 3 of the PCM60 hardware, they are simply test points pre-regulation of the +/- 15V rails which is why they were so noisy and not actually used in the design.
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
I normally loathe the thought of trying to find useful information from youtube videos. Was shocked and amazed at the quality of the content I found here, it was absolutely helpful to me and very much appreciated!
I really admire people like you who enjoy this kind of challenge! Great work and fascinating video! I'm envious of people, like you, who have such a wealth of skills and knowledge. :)
That was outstanding. Thank you so much for taking the time to do this!
Great video I subbed, I just completed recapping my entire Mci 428 Console now I’m going on to recapping my pcm 60, spx 90, Effectron effects units. From there I’m going to recap my entire mci jh-24 tape deck. Lots of Digi-key ordering.
Thank you for taking the time to make this video I know there’s a lot involved.
Wicked! Totally over my head, but enjoyed watching it for the anticipation of you actually fixing it and you did! Great job, super exciting! I wish I could do things like this...
Great Video! Can you share a link about miniPro ? thnx
Do you offer these services ?
These vids are great. Like a digital Mr Carlson.
what are your thoughts on double stacking the Dram chips in the sockets ?
Amazing! Love your videos and work mate. Keep them coming!
Hello
A question if you dont mind
PCM42 supossedly has optical U15 + U14 dry signal limiters on the input
Have you noticed these on the PCM60
The reason I'm asking is that PCM42s input when pushed makes a distinct distortion used by pros to saturate and give grit
The PCM60 can do the thing too but I can't find a comparison anywhere and I don't have the units myself.
Hi there, I have a lexicon pcm 60 from old seller.
It have buzzing noise and distorted.
Can you fix it?
great job. great explanation!
You went from the caps right to the eproms. I think you cut some stuff in between. Did you still have the ripple/noise and overvoltage after replacing the caps?
Pete Brown yes he thinks that every fault he checks the culprit is forever a cap in the power supply... then he starts to change components at random... read the service manual first, then grab the oscilloscope and use it!!! and use a signal tracer too to repair musical instruments!
@@ubaldoregnani9382 To be fair, in these 30+ year old music devices, the caps are usually a problem, or are about to be. :)
But I get the rest.
Hi Pete, thanks for watching. I lost a few portions of the video due to poor audio, so some of the repair doesn't quite flow as well as I would have liked. Ripple was lower after replacing the caps. The caps were not the ultimate cause of the ADC issues of this unit, but any 30+ year old piece of studio gear will need them all replaced regardless so I did them first. I wanted clean supply rails for troubleshooting and wanted to get that terrible bodge out of it as well. As for the +5.4 rail, it did calm down after the capacitor replacement to around +5.1V. The +22 and - 22 test points I mentioned were introduced in REV 3 of the PCM60 hardware, they are simply test points pre-regulation of the +/- 15V rails which is why they were so noisy and not actually used in the design.
@@bradthx Cool, thanks. That capacitor bodge was quite amusing, in a sad way :)
Don't think I've ever seen radial and axial caps gettin it on before. First for everything😂
Thanks for the fantastic tutorial! What is the 8v rail used for? Mine is reading high as well: 11v.
Mate are you in UK?
Alesis MidiVerb, Digitec Digital Delay, Yamaha SPX-50(Pitchverb
Hi, I have the left output a bit lower than the right output on my pcm60 (like 3db or so). Any idea what I can do?
@bradthx: I posted a component question on your lxp 15 video. Need to get a replacement - thought you could help
bro i got a question do you think the lynx audio ad da e22 have a sample and hold circuit ? or do i need to design one for it
Thanks for this man, you are the man!
the 'MMU' means 'memory management unit' ... just to clarify