March 7, 200917 yr Looks Like I'm gonna have to have a dig around in there to see if I can tell what's wrong and try to fix it. I hope it's simple like the jack connection. I'll pop it open and post some gratuitous pics in a bit...
March 7, 200917 yr Author Hmm, I never thought to check the tubes.... I tried it with a few phones and a different mini-mini just to make sure, it's definitely something inside. Anyway, I have to go get some stuff before I start so wish me luck... the asshat is about to prep for surgery
March 11, 200917 yr Author Marshall is sending a new opamp and some magical stuff to remove the old one. Let's hope I don't fry its ass during the operation...
March 11, 200917 yr Marshall is sending a new opamp and some magical stuff to remove the old one. Let's hope I don't fry its ass during the operation... removing SMD opamps isn't my idea of a fun night ... I'd recommend clipping all the legs off, basically destroying the old opamp, then use flux on the area and finally solder wick to pull the old legs off.
March 11, 200917 yr Author It's going to be interesting to say the least, especially with all the other components in place. I guess this is where I find out whether I have what it takes in the soldering department.
March 11, 200917 yr Gary, I'm not sure I'd even try to remove the opamp intact. Just cut the little bugger off and then take your time removing the remnants of the legs.
March 11, 200917 yr MisterX didn't build it, he was kind enough to offer help though. Ahh, ok. That was really nice of him send it to nate
March 11, 200917 yr Author Gary, I'm not sure I'd even try to remove the opamp intact. Just cut the little bugger off and then take your time removing the remnants of the legs. Marshall is sending some special stuff that's supposed to melt the solder and keep it hot long enough to remove the chip in one piece so I'll see how well that goes before getting the clippers out.
March 12, 200917 yr Does it use a dual opamp or two single soic? I have two OPA627 soic I could donate.
March 12, 200917 yr The Mini3 uses one of two very specific OPAMPs. I don't think you can just drop anything in there and get good results
March 12, 200917 yr Author I'm going to wait until I can test and have parts before I take it apart so I haven't looked inside, don't suppose it'll be much different than any other mini.
March 25, 200917 yr Can I piggyback on this thread to ask a general mini3 question, please? I just ordered a gamma lite/mini3 combo from Marshall for a friend. He'll be using it in a static computer rig with The Monkey's old HD-25-1s to start with and who knows what else down the road once the bug bites. What gain setting should I specify?
March 25, 200917 yr My Mini3 built by Marshall has a gain of 3, plenty of volume at 9:30 o'clock position when using HD600, painful at 10:00.
April 5, 200917 yr Author When Marshall checks for a fault in the left channel, he like to eliminate all other possibilities. I think he's narrowed it down by this stage and is close to an answer
April 5, 200917 yr What the bloody hell?!? I could have hacked the traces going to output jack together but I thought a replacement board was the best solution.
April 5, 200917 yr I could have hacked the traces going to output jack together but I thought a replacement board was the best solution. Win! Here I thought you were just showing off your desoldering equipment
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