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About didius
- Birthday 11/30/1985
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I've measured some of the pinout, I know where the grounds are, found two +12V, a +5V, a +3.3V. Sound kinda tricky though. I guess I'll look for another 15" Studio Display, might try this generic dual inverter as a project. (long term project though) Thanks for the info techknight!
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I've measured a thing or two today. I started by desoldering the cap on the inverter, it doesn't seem broken since it measured 47 muF as it should. I resolder the joints on the film capacitors. Problem remained. Then I started measuring the voltages as provided in the service manual. ADC is giving +25V to the main board instead of the +28V as noted in the manual. I guess it differs between graphic cards (?) the U5 IC on the main board gave +11.9V (should be +12V) OK connections 1 and 2 on the J3 connector (main board side) both measured +12V (as it should) I guess the main board
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I have a 15" Apple studio display hooked up to my cube. Some months ago I noticed the bottom half of the screen being dim and a the led error blink sequence "short - short - short". According to Apple it means "video output wrong" but the display shows the same error code when hooked up the a powermac G4 MDD, unlikey error it seems. I decided to open the display and check it's internal organs. Nothing seems wrong, but I noticed the following. I took both light bulbs out and connected them to the inverter. The top bulb is working, and when I switched the bulbs, the bottom bulb (conn
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867 G4 Quicksilver CPU fan replacement
didius replied to Syntho's topic in G3/G4/G5 Power Mac, iMac & eMac
I don't own a Quicksilver, but xlr8yourmac seems to have a great number of articles on the Quicksilver fan. Like this one: http://www.xlr8yourmac.com/systems/quicksilver_CPU_fan_mod/quicksilver_cpu_fan_noise.html -
SSD in a G4 cube? Here's a bracket!
didius replied to didius's topic in G3/G4/G5 Power Mac, iMac & eMac
@TimHD: I bought the following one: ebay I must admit the solderjob is not perfect, maybe I will apply some more solder to the joins which have to little (my opinion). It works fine though. -
SSD in a G4 cube? Here's a bracket!
didius replied to didius's topic in G3/G4/G5 Power Mac, iMac & eMac
You can get it very cheaply on eBay, I got mine imported from china for about € 4, works fine. -
SSD in a G4 cube? Here's a bracket!
didius replied to didius's topic in G3/G4/G5 Power Mac, iMac & eMac
I find PATA SSD very expensive (in price per MB) and hard to get. This adapter solution works great. -
SSD in a G4 cube? Here's a bracket!
didius replied to didius's topic in G3/G4/G5 Power Mac, iMac & eMac
I bought the spirica heatsink years ago (when it still was in stock). Here you can see some pictures of it. I don't have it cooled with a fan though, I have a fan on the bottom of my cube instead. (actually, someone should copy the spirica heatsink as an open design, then it could be cnc-milled at makerspaces) -
I want to upgrade my G4 cube and put a SSD drive in it. Fitting the drive and it's SATA-IDE adapter isn't that easy because of the Cube's compactness. Which led me to design a bracket, download it on thingiverse . It fit's the cube nicely, both bottom and topbracket. PS: I also made an Radeon 7500 bracket for the cube.
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iMac G3 DV SE 400: Bad CRT but VGA out works
didius replied to XBHS1997's topic in G3/G4/G5 Power Mac, iMac & eMac
I have done it, see https://68kmla.org/forums/index.php?/topic/20661-imac-g3-dv-se-recapping/ A lot of work though. -
iMac G5 2.0 20" (ALS), can I fixit?
didius replied to didius's topic in G3/G4/G5 Power Mac, iMac & eMac
I looked further into the problem. Using the following pinout I checked the PSU. When trickling the power supply I got all the correct readings. I guess the PSU is fine. I went to check the motherboard and noticed two things. 1) On the backside one cap connection seems to be bad. I noticed some goo-like material which could imply bad caps. 2) Strange! On the motherboard just below the pile of caps there seems to be a missing component. Removed? By whom? Does anyone know what component used to be present here? Is it possible to resolder such a component back in? What do you th -
iMac G5 2.0 20" (ALS), can I fixit?
didius replied to didius's topic in G3/G4/G5 Power Mac, iMac & eMac
Okay, I guess I should prepare for a full recap. I see all the caps are Rubycon, aren't these high quality caps? And does this somewhat later version of the iMac G5 still suffered a lot from this bad cap problem? -
iMac G5 2.0 20" (ALS), can I fixit?
didius replied to didius's topic in G3/G4/G5 Power Mac, iMac & eMac
Wouldn't the iMac refuse to give any signs of life it that were the case? Is it possible to check the pinouts of this powersupply before I bust it open? Could someone point me to the correct pinout, I don't know if there is a lot of difference between the models (ALS vs ordinary iMac) in terms of PSU -
I got an iMac G5 2.0Ghz (ALS) from a friend which doesn't boot. When I push the power-on button the front light turns on, and the fan starts spinning. I don't hear the happy mac sound though. After a while the fan starts spinning very hard. All this time the screen doesn't turn on. I've opened the back and here a look at the interior: The caps are not bulged and don't appear faulty. When inserting the power cord led 1 turns on, pushing the power button makes led 2 turn on. Led 3 and 4 don't turn on. What do you think? The person who gave it to me said a computer supplie
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Okay, I give. How’d you do that? I used a sharp knife to carefully pry it open. After the fix it is possible to glue it back together. You can't see it afterwards.