Hi D,
At the risk of sounding patronising (not intended, honest) have you eliminated
all the other possibilities?
- Was the Iici working before it was recapped?
- If yes, were there any particular symptoms such as odd images on screen?
Checkerboard? vertical lines?
- Have you checked there are no dry solder joints? Magnifying glass is good
(personal experience)
- Check ALL joints, not just the ones you did.
- Have you checked there are no bridged solder joints? Again magnifying glass
is good (personal experience)
- Are the brightness and contrast controls turned up on the monitor? (I swear
this is a thing, personal experience)
- Are you getting all the correct voltages from the PSU rails?
- When you recapped the mainboard, did you recap the power supply as well? I do
this as a matter of course. All those heat up cool down cycles will eventually
throw the voltages off.
- After recapping the mainboard, the board was cleaned to remove any residue of
battery and old cap electrolyte? Electrolyte will causes shorts. I use
isopropanol/isopropyl alcohol but I have run a dishwasher cycle or six on
Analog/PSU boards as well as mainboards (remove chips from sockets before
washing).
- Can you check the monitor works with something else?
I know it sounds like I'm covering the obvious but it's all meant in good faith.
Cheers,
Keith
On Monday, 29 October 2018, 18:35:04 GMT, [email protected]
<[email protected]> wrote:
Hello,
I’m rebuilding a Mac IIci, starting with a recapped mainboard. The boots with
a normal chime and the 13”
RBG monitor powers up, although the display remains blank. The PRAM battery is
new as well.
I have read through some posts on similar problems and I’m looking for
suggestions on isolating the problem; could this be a problem with the onboard
video or has the monitor finally died?
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