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The trim will only control the input level of the MIC input, not LINE. Sounds like you are getting okay level from the phone anyhow. Make sure you aren't leaving a red L/R button pushed on one of the channels. If any one of those is pushed the monitor section will not function.

Yeah...I don't even understand some of that so I think you are correct to say it's beyond my abilities. :D I intended to keep it as a parts machine but when I saw the cheap transport pop up on ebay I decided to give a go. Oh well, I don't need 2 and now I have some parts for when something goes...

Yes, but to be clear I'm talking about the second unit. The primary unit is 100% functional after the connector pin swap. The second unit needed capstan belt and a transport (something spilled on the original and toasted a lot of the components). I picked up a transport control for $30 on...

Alright! That did it. The little metal piece was completely broken off inside the connector but I was able to transplant one from the busted transport from the other unit. What a relief! I cleaned up the pinch roller core and shaft with just a dry Q-tip. It wasn't especially gunky or anything...

Okay, great. I hope that is the case. By "jack PCB" you mean the PGM output jacks board?

I will confirm when I get home but I'm 99.9% sure the VU meter works normally. IIRC you need to arm the track in addition to assigning the signal to PGM to see meter movement.

Just got back in town this evening and had a chance try this. I am getting a continuity reading between pin 5 wire and pin 1 of U111.

I spent about 6 hours yesterday tracking with the 388. It was only my second time using it in a session but I already feel like I have a pretty good feel for operating it. It really is a delightful machine to work with. I need to look into the pinch roller, it sometimes sticks a little and slows...

:D That does make me feel a little better. I'll be escaping the Texas heat for the mountains of Colorado later this week but I'm going to try to get in there and take a closer look at the connector before I take off. Maybe even have time to swap the assembly if it comes to it. I will let you...

Yes, I'll get a pic tomorrow but I can be more clear. It's the slot in J109 that receives pin 5 from P109. The metal piece inside the hole is bent or possibly broken so pin 5 has nothing with which to make contact.

I got careless when hooking up the send rcv snake to the patchbay and got a couple crossed and got things all confused. Annoying and embarrassing mistake but at least an easy fix. :facepalm: On the connector problem... to be clear it's not the RCA jack that I have a problem with, it's the...

Well, gently isn't doing it. I don't know that it's possible to push through from the outside to straighten that metal strip. At least I know where the problem lies so I can find a solution. I was planning to use it for some recording tomorrow so I just got it put back together and now...

I might have discovered one problem early in the chain. To test the continuity I set my meter appropriately and I touched one terminal to the solder lead for 5 on one side of the PCB and the other terminal to "top" of the connector where there are little slots. I was not seeing any change on...

.18 between 5 & 9

Understood. 5 & 9: .156 no reading at pgm 5 out

When I first tested it was jumping around a lot between .085 and .250 but it settled at .167 No reading from pgm 5 out.

1 & 3: .262 2 & 3: .012 1 & 9: .17

I was looking at diagram 4-6 (buss B PCB) in the schematic diagram section. I see the "1" marking now and my process was correct. When I tried again just now I got .249 between 7-9 .011 between 8-9 .134 between 5-9 (yellow) I did change the input gain a little from last night when I was...

I'm about 90% confident I'm doing this correctly. I have my mulitmeter set to "2" sensitivity. When I check between 7 & 9 on the white connector I get a reading of .251 When I check between 8 & 9 I get .003-.004 Between 5 & 9 of the yellow connector I get .085 I counted pins according to...

Okay I'm about to turn in for the night but I will try that tomorrow. I just pulled out the schematic and opened up the 388 to see if I have any questions and I think there's an error in the schematic. The white connector is actually the ODD PGM connector. I've triple checked and they're not...