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Looper's Delight
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On 7 Oct 2008, at 19:47, Daniel Hegarty wrote:Guys,Firstly just to say thanks so much for all the help, i've never seen anything like this level of support for a broken piece of gear anywhere else!you know, the addict always form support groups and feel compassion if brothers drug is down :-)LOLthe anonymous loopers !Unfortunately my woes continue! So I've re-seated all the SIMMS and EPROMS and it seems i've solved one issue while creating another! Now when i go into test mode and output the 60hz test signal, it works perfectly, no static or distortion whatsoever. But i'm now caught in the boot-up loop with the LOOP IV text just going round and round.Matthias mentioned a square chip, but I can't see one on the board. There's a square metal covering that may contain it underneath but I don't know how I would safely remove the covering. Could anyone point me to this square chip or how i might go about removing the cover (if i need to!).yes, I forgot that there is a cap over said chip region, in the newer versions (due to CE test)probably not very easy to remove, I never had to do it, I don't have such a new unit.but dont bother to put it back in place, its just some little radiation, will not affect sound...oh, and its under the left cover, I feel. ;-)Again, thanks so much! Really unbelievable.yes, really... I have been off list for years, but there always have been helpful and lovely souls on this list... and sometimes it cooked, emotions, insights... improvisers you know... :-)youhou, I am codependent!DanielOn 7 Oct 2008, at 19:06, Matthias Grob wrote:this means that the processor and most of the digital part runsand possibly the CODEC does not (the other square chip)it starts up at one crystal frequency and then switches to the other at the end of the loop circus, which is when your crashes now.On 7 Oct 2008, at 07:50, Daniel Hegarty wrote:Hey Matthias,Thanks for you fast reply!
Unfortunately things have gone from bad to worse. I knocked on all the chips and gently manipulated the board but nothing seemed to make a difference. When I put it into test mode and generated the 60hz signal its just a wall of distorted hiss!I re-seated all the EPROMS without any difficulty, and they've all sat in nicely with no bent pins or anything. But..... now when it boots it just loops around the LOOP IV scrolling on the display and then re-boots again. It repeats this cycle endlessly!Oh dear......Thanks againDanielOn 7 Oct 2008, at 00:06, Matthias Grob wrote:EPROMs have labels on them...any chip on a socket can be lifted a little (better not take it out completely) with a screwdriver on the side and then pushed backits harder with the two square chips, since you can only insert a fine thing in two corner and the socket may be forced... there is a special tool for those.contact spray is another method.since its working correctly sometimes, a bad contact is quite likelyoften it can be produced or "fixed" by just bending the board or hitting on it in different places (softly drop the back of a screw driver on chips) and thus aproximate the bad spot\good luck!and sorry for the confusionsome of the parts went out of fabrication years ago, so "new" is relative...MatthiasOn 6 Oct 2008, at 19:07, Travis Hartnett wrote:I can't recall where they are right now. Whenever I had to reseat them, it was in the process of doing an upgrade, so I was holding the two new EPROMs in hand, so it was a simple matter to find the two things already on the board that looked like the new ones. Maybe someone else can chime in with a diagram, since I'm unable to find one online.
THOn Mon, Oct 6, 2008 at 2:58 PM, Daniel Hegarty <danielphegarty@googlemail.com> wrote:
This will sound stupid but..... which bits are the ERPOMS and how would i go about re-seating them?ThanksD