Smeggy Posted March 7, 2009 Report Posted March 7, 2009 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...
Smeggy Posted March 7, 2009 Author Report Posted March 7, 2009 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
Smeggy Posted March 11, 2009 Author Report Posted March 11, 2009 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...
luvdunhill Posted March 11, 2009 Report Posted March 11, 2009 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.
Smeggy Posted March 11, 2009 Author Report Posted March 11, 2009 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.
Smeggy Posted March 11, 2009 Author Report Posted March 11, 2009 MisterX didn't build it, he was kind enough to offer help though.
n_maher Posted March 11, 2009 Report Posted March 11, 2009 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.
jinp6301 Posted March 11, 2009 Report Posted March 11, 2009 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
Smeggy Posted March 11, 2009 Author Report Posted March 11, 2009 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.
HeadphoneAddict Posted March 12, 2009 Report Posted March 12, 2009 Does it use a dual opamp or two single soic? I have two OPA627 soic I could donate.
Beefy Posted March 12, 2009 Report Posted March 12, 2009 The Mini3 uses one of two very specific OPAMPs. I don't think you can just drop anything in there and get good results
Smeggy Posted March 12, 2009 Author Report Posted March 12, 2009 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.
Hopstretch Posted March 25, 2009 Report Posted March 25, 2009 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?
Smeggy Posted March 25, 2009 Author Report Posted March 25, 2009 Never heard those, mine is set to 5 i think which is default.
Cankin Posted March 25, 2009 Report Posted March 25, 2009 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.
Mister X Posted April 4, 2009 Report Posted April 4, 2009 The left channel is the least of the problems now.
Smeggy Posted April 5, 2009 Author Report Posted April 5, 2009 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
Mister X Posted April 5, 2009 Report Posted April 5, 2009 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.
Pars Posted April 5, 2009 Report Posted April 5, 2009 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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