I'm at work and I can't take a photo right now, but can a photo from the Internet be useful to identify critical areas?Traces are ok around the capacitors, except C13, that i have repaired and the internal speaker receives sound.
I'm at work and I can't take a photo right now, but can a photo from the Internet be useful to identify critical areas?Traces are ok around the capacitors, except C13, that i have repaired and the internal speaker receives sound.
Tomorrow I try to check the egret, today it's late here.Right above the FPU socket is the EGRET (341S0851) try cleaning and reflowing those legs (be careful). But please when you can photos of your board would help.
Thank you very much, I will try everything you suggest. Just to indicate that I have changed ALL the capacitors already, I am waiting to receive the SMDs to replace the ones in legs, which are temporarily. The 4 SMDs near the audio zone are new. The very long legs capacitor was only there while I changed the RAM chips, I have an SMD saved to put it in, but I don't want to damage it with the air soldering iron.Hey there @indibil I have had a chance to look over your photos and I see a few things I'd like to offer as suggestions. First being add a VRAM simm to this Lciii, you'll want one. Secondly I see you went with through hole capacitors which is okay but when it comes to stuff like this its ideal to use SMD electrolytic capacitors or tantalums (I personally go with tantalums but that's up to your personal preference). The capacitors you have here will work fine its just not ideal is what I'm saying. I would definitely cut the legs on these and make them shorter and closer to where they belong. Also I see by C13 you have a missing pad to fix this simply scratch into the trace and run a bodge to the negative side. Also clean up the legs on that EGRET chip with alcohol and carefully reflow them with new clean solder and flux. I see you have a few capacitors that are original to the board, you'll definitely want to replace these as I am sure they are no doubt leaking and are starting to fail if they haven't already. Last but not least the death chimes indicate bad RAM so I'd try a new RAM simm and if that doesn't make a change definitely look at those on board RAM chips, clean, and reflow them with new solder and flux. Ive added your original photos below with some comments/pointers let me know if they help and we'll hope to see your LC iii back up and running.
EDIT: You can get a full board recap kit HERE at Console5 and its pretty reasonable.
Chimes mean the self test failed, which is most likely RAM, but can be other things.Last but not least the death chimes indicate bad RAM
Hello again. I have removed the egret chip, cleaned and re-soldered, but the problem persists. C13 is soldered so that the negative leg contacts where the missing pad hits. It is temporary, until you receive the correct caps.Hey there @indibil I have had a chance to look over your photos and I see a few things I'd like to offer as suggestions. First being add a VRAM simm to this Lciii, you'll want one. Secondly I see you went with through hole capacitors which is okay but when it comes to stuff like this its ideal to use SMD electrolytic capacitors or tantalums (I personally go with tantalums but that's up to your personal preference). The capacitors you have here will work fine its just not ideal is what I'm saying. I would definitely cut the legs on these and make them shorter and closer to where they belong. Also I see by C13 you have a missing pad to fix this simply scratch into the trace and run a bodge to the negative side. Also clean up the legs on that EGRET chip with alcohol and carefully reflow them with new clean solder and flux. I see you have a few capacitors that are original to the board, you'll definitely want to replace these as I am sure they are no doubt leaking and are starting to fail if they haven't already. Last but not least the death chimes indicate bad RAM so I'd try a new RAM simm and if that doesn't make a change definitely look at those on board RAM chips, clean, and reflow them with new solder and flux. Ive added your original photos below with some comments/pointers let me know if they help and we'll hope to see your LC iii back up and running.
EDIT: You can get a full board recap kit HERE at Console5 and its pretty reasonable.
I think you're absolutely right. I will tell you about the test that I have carried out.Chimes mean the self test failed, which is most likely RAM, but can be other things.
I'd expect it to death chime in this configuration, but I could be wrong.I have removed all the RAM chips from the motherboard. When turning on the chime is heard and the chime of death does not occur. Means something? Without RAM it does not even perform the diagnosis?
I'd take the SIMM out and spray contact cleaner in the socket. Then before latching the ram down, I'd mostly insert it and wiggle it about a bit to make sure it gets good contact.Then, before placing the original RAM chips, I added a working RAM SIM, taken from the LC475, and as soon as I turned on I had the chime, followed by the chime of death.