Recent content by amedeo_68k

Hi everyone, I finally solved this, it has been tricky. The issue was a bad CNY17-3, even If it was already been replaced 2, the key is to get a really good one. The Philips one works perfectly

Hi, I'm still having issues, I took a thermal camera picture of the analog board within the first seconds after turning on, then I have redone all solderings ( full solder removal and put fresh new ) in the hot areas, still no luck. As I have issues in both +12V and +5V I would say that the...

Issue still ongoing, I'm going to replace the TL431 and both QP3 and QP5

Thank you all, yes I checked them, removed old solder and put new, the board has ben cleaned, no fluid, to be 100% sure, I could remove the main transformer and clean under it, I could remove the flyback as well, but it looks like to be clean

Hi, I have replaced the Optoisolator, the issue is not gone, but there is much less noise and for less than 10 seconds. The two 1N4148 diodes has been already replaced, but I could replace again, may be I want replace again the caps around the area, may be they have no ideal ESR, other toughts ...

Hi, I have fully recapped a Mac Classic, it worked fine for about 1 months, suddenly last Sunday it started having this issue at power on: No chime Video have waves After 1 minute it chimes and starts booting The video starts to stabilize slowly, and after 3 minutes everything is good. I have...

I have this portable, fully recapped, Floppy restored and HDD with bluescsi, everything perfect except the display, do you know if it is possible to get a replacement ? Thank you Amedeo

Do you see anything on screen ? I have a IIfx too that just does death chime

ok, cool, I'm going to try next week, Thank you

I could put a dummy load and check voltages with oscilloscope. I’ll let you know. The frustrating thing is that you cannot test analog board without CRT

I think the issue is more on the 12V side. Btw now I no longer have the logic board. I had two Analog and one Logic board ( one Classic were battery bombed ). Btw I think I can measure voltages on logic board connector without the logic board

@emuboy hi. The no power at all analog board has been fixed. I’m talking about the other one. Heavily distorted video. No chime

Hi everyone, on the fully dead analog board I replaced the components as suggested by @dochilli and we are back to life !! Thank you ! There is a little issue. I have some little flickering on screen but only if the internal hard drive is attached. May be some interference. About the second...

I have two analog board, both fully recapped and one logic board (recapped as well) - First analog board (rev A), no power at all - Second analog board (rev B), weird vide and stripes, no sound - Logic board alone with external power and headphones, I can hear chime

Thank you, I'll do shortly, meanwhile I tried with another Analog Board (V2) (already fully recapped), with its own CRT, it is easier to say I swapped thr Logic board to another Mac Classic ( that was battery bombed ), I now get this, ideas?