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Power Mac 5500 picture problem
Posted by: toples50 on 2018-04-26 03:14:22
I have picture problem(distorted picture)when I switch the resolution from 832x624 to 1024x768.Also sometimes I hear from the screen some clicking sounds.

IMG_2863.jpg

IMG_2865.jpg
Posted by: 360alaska on 2018-04-26 14:16:39
Audible clicking the coincides with screen distortions is usually solved with a recap but it could also be the Fly-back transformer in my experience.
Posted by: toples50 on 2018-04-28 07:05:26
Do I have to recap the motherboard?
Posted by: Macdrone on 2018-04-28 23:03:07
analog board and flyback on the analog board at a minimum.  
Posted by: toples50 on 2018-04-29 02:38:59
How can I opened it?And where is the analog board?

Its an easy procedure or not?
Posted by: MOS8_030 on 2018-04-29 07:29:35
This will get you started.

http://tim.id.au/laptops/apple/legacy/powermac.perf_5400.5500.pdf
Posted by: AlpineRaven on 2018-05-01 16:13:56
With those displays you need to calibrate with special tool or apple device to calibrate. Its not simple like old macs can with pots.
Cheers

AP
Posted by: just.in.time on 2018-07-03 18:38:29
Nice machine!
Posted by: techknight on 2018-07-17 15:36:44
Clicking could be the multisync relays kicking in. Not descriptive enough. 

Also when you switch resolutions you need to adjust the geometry using the control panel. 
Posted by: 360alaska on 2018-07-17 16:05:31
Another thing to try is to decrease the brightness until the screen is just barely visible and see if things get better. If the clicking and distortions stop or decrease then then caps are suspect. Lowering the brightness lowers the stress on the analog board components.
Posted by: techknight on 2018-07-18 14:33:18
Another thing to try is to decrease the brightness until the screen is just barely visible and see if things get better. If the clicking and distortions stop or decrease then then caps are suspect. Lowering the brightness lowers the stress on the analog board components.
Not to mention it drastically increases CRT life. 
Posted by: EvieSigma on 2018-07-18 17:59:57
I always push the brightness down as far as possible on any CRT I use, whether it's a TV or a computer monitor. Haven't had a CRT die yet!
Posted by: techknight on 2018-07-22 05:49:33
I do the same thing. Never run any modern display or even vintage display at full brightness or they wont last. 

my Samsung 20" LCD monitor I bought brand new in 2007 which are known for capacitor failures lasted up until about a few months ago because I only ran it half brightness or so. 11 years on all of its original parts before failure. Not bad. The Chimei I bought 6 months later at an after Christmas sale is still going. its my daily driver as my secondary. 

I definitely dont run CRTs at full brightness either. its harder on the deflection components because the current draw of the CRT itself increases, but it also accelerates cathode wear. 
Posted by: CC_333 on 2018-07-24 22:12:45
Got my Apple Cinema Display in February of 2009, and it's doing well. I've run it at full brightness during most of the last 9 years, though, which musn't have helped it.

As for my various computer CRTs, I use them seldom enough that operating them at full brightness when I do use them probably won't do much harm.

My 27" TV, however, I use at somewhere between half and two-thirds brightness, because the colors bleed like mad when it's at full (probably due to wear and tear, as I vaguely remember reading somewhere that when that happens, the CRT is probably at best half-way through its service life). We did buy it new in 2005, so it's +/- 13 years old. That probably explains it.

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