Mac Classic II Squeaking

[SiliconClassics]

My Color Classic just developed the same exact problem - at first I thought it was a failing hard drive. Upon closer inspection most of the electrolytic caps on the motherboard are toast - I will be replacing them with tantalum caps from DigiKey.

[Psypherion]

There's a bug in it!

[nintendolover2000]

It sounds like my grandmother's teapot ;)

[robbo4life]

justin bieber singing!

[1991SegaSonic]

OK so what you have is the chiuaua virus!!!! Jk! its the fan. i think that cools down the mac. it has something probably stuck in it....

[KartSeven1]

@myoldmac Your tea is done!

[Macintosh3745]

its like NOOOOOOOOOOOOOOOO I AM BETTER THAN WINDOWS DONT LEAVE NE NOOOOOOOO NOOOOOOOO NO NO NOOOOOOOOOO :(

[miestarSqils]

That's the magic mouse

[6Cozmik9]

better than vista

[dreaddog]

It's Possessed! :D

[THEtechknight]

your capacitors are SHOT

[cy012201]

What did you do to it? Put a squirrel in the floppy drive instead of a disk?

[RyanJWN]

Some mouse got stuck in ur wiring

[scar1343]

its bad capacitors

[theringfilm1]

its crt screen flyback

its failing.

it happens to most crt's when they are about done

[macguionbajo]

looks like the tea is ready

[TheNascarfan14]

Does It Still Do It????

[mudkiprules4]

Macintosh: It makes Tea :D

[FreeLanceArizona]

God sounds like you have a mini hurricane going on in there. Either that or its about ready to blow up

[ActiveWorldsLunitic]

It sounds like your tea is ready!

[xiec]

ha! I thought my Classic II was the only one with this problem. Don't quote me on this but I think it may have something to do with the CRT giving off interference due to age - that is a hunch and I haven't set myself a task to prove it. There are many reasons why I don't use that computer daily, mainly because its so damn obsolete. WTH will it start to appreciate in value? :(

[Lazymob]

Your tea is ready sir!

[blackbullet357]

those of you who say its floppy drive, you are all wrong. I have seen this and heard this before, its always capacitors.

[blackbullet357]

sorry man, you have bad capacitors on the motherboard. What happens is they are filled with a liquid called electrolyte which charges with electricity, if they are bad, they give off hydrogen gas until they explode, new ones have slits so they break and the gas can escape saftely. yours probably broke the slits and are "venting" but yeah whether they vented or not, those are bad capacitors. Those old Macs were notorious for that after a period of time. Replace the motherboard.

[VaderNES]

Why not just replace the capacitors? As long as you discharge the old ones first, you won't be harmed by them.

[2007FORLife]

LOL Sounds like on dem cartoons when they're getting mad and they're face goes red :P

[holysab7]

wen i turn mine on i always get a picture of a floppy disc with a question mark flashing on on it

[myoldmac]

The system on you Mac is defect or can not be found.

If you have the System Installations Disks try the "Disk Utilitys Disk" to boot the Mac, find "First Aid" on the disk and try to repair it. If that does not help, install a new system from Floppy Disk and it should work again.

[drum00]

its alive ahh!!

[WhiteLionness]

weird, my TV does that too

[Segasaturn95]

It's haunted!

[anasazi4st]

I've been doing some research to fix a problem on my Mac Classic II...and I have stumbled upon the solution to yours, I believe.

The small can-type (silver) capacitors are likely bad...I'm sorry that I don't have the exact link where I read that (it was actually several places)...but you should be able to find it. Good luck!

[7FridayGirl109]

owee :P

[Killm33m012]

sounds like a pissed off cat

[bsasam]

yeah it does

[samssoftwareuser]

hey dimmy dude, that is a bad capacitor, not the flyback transformer.

[skypeandmsnfan]

oh man that is one sexy pc.

[DJDigitalMonster]

It's sounding to me like a bad Flyback Transofrmer for the CRT screen.

[damirault1337]

Its not the flyback. Its the caps on the motherboard. If you look really close in god light you will notice a small juice dried up under a couple of the small surface mount electrolytic caps. fixable with a new mainboard or replacing the caps. If it were the flyback there would be a much higher pitch whine at about 15khz... and it wouldnt change in pitch, jsut intensity based on how much white is on the screen.

[TeamNES1]

That 15khz squeal is exactly like what my TV sounds like when I start it up. Thanks for helping me narrow it down, I appreciate it. Now, if someone can help me find a flyback for a 21" RCA TV from 1998, I'd appreciate it even more.

[tocaracer06]

apple tea anyone? :-)

[volcom20012]

she's a beauty

[HyperionGamer]

It's crying :)

[st112570]

Your tea is done.

[pcfreak65]

lol

[canadianman000]

I cant hear the sound with this computer but if you are hearing a sound being produced from the speakers that changes in pitch from time to time, like a mouse squeeking. Its capacitors.

[exgensec]

I had the same problem on my Mac Classic II for some time, but after an hour or so the noise would stop ... I assumed it was because all the components had warmed up. I did not use the Mac for about a year and a few months ago when I switched it on the display was faulty ... mainly black with white stripes of variying length. I'm grieving for it, it's like losing an old friend. I assume it has power supply (EHT?) problems.

[myoldmac]

Hi, it sound like my problem. The capacitors on the mainboard are defect - they reduce the internals sounds on the board. They have a lifetime about 10/15 years and now going to die. Many Classic Macs get the problems in these days... Only one chance - replace the capacitors with new ones.

[exgensec]

Hi, Your diagnosis seems reasonable for the noise but do you think it would also account for the screen 'blackout'?

Did your problem get resolved by changing the capacitors? If so was the work done by an agent or yourself. Also I assume there are many capacitors. Any particular ones changed?

[myoldmac]

I replaced the Motherboard :-) I still havn´t soldered on the MotherBoards - but it seems I will. You should chage all capacitors because if one dies all will. They have different voltages - I still look for a good list for the used capacitors... Can anyone help ?

[maiden30403]

Have you checked for any loose connections at the speaker? Most problems with these old macs can be fixed with a total resit of everything.

[myoldmac]

I did and the problem remains. I now have washed the complete Motherboard. Needs to be added to the classic and then we see... I think the capacitors are dead because they leaked out. I washed away the leak and try to run the Classic with the cleaned board. Stay tuned...

[maiden30403]

Capacitors leaking = Bad news

Did they pop or just leak?

[myoldmac]

They just leak - Does anyolne knows a list of capacitors that can be used to replace the original ?

[HumanTurkey]

Poor Mac Classic II!

[TacoSoft]

wd-40 is a type of oil for lubricating things.

This would not actually help here as it a problem with the speaker and not the fan

------------------------------­--------------

wd-40 ist eine Art öl für das Schmieren von Sachen. Dieses würde nicht wirklich hier als es einem Problem mit dem Lautsprecher und nicht dem Ventilator helfen

[Intersonus903]

Actually, WD-40 is a petroleum distillate-based water displacer and a penetrant. It's really meant more for protecting metals from moisture and to penetrate and break down rust. It's actually a very poor lubricant.

[ZDTVMultimedia]

I have a Performa 400 motherboard which is doing the exact same thing. The motherboard has been in a box unused for about the past 5 years or so. I just installed it today and it's squeaking. I have a 475 motherboard which does NOT squeak, so it's something on the board.

[myoldmac]

I think so too, I removed the speaker and it still squeaks. As I replaces the Logic (mother)board the squeaking stopped. I think the capacitors are dead and need a replacement.

[masterOFpuppets06]

Its crying lol

[wargdk]

i was laughing at that comment ;)

[Brutice]

I got one of those, except mine doesn't make that sound (thank god). I first thought it sounds like the dreaded high-tension transformer squeal but considering it's coming from the speaker, I'd say you have a dud capacitor somewhere in the audio section.

[cfredrics]

It is a spray on lubricant. Google wd-40 for a better description.

[TacoSoft]

Yeah, since the last time I posted, I got two of these. One of them does it ALL THE TIME! The other does it rarely. Most of the people I have talked to have this same problem. How funny!

[RABBIDGamfan]

I have that problem too. I'm not sure what to do about it, maybe try replacing the speaker or cleaning the connector on the logic board. At least that worked with the Mac IIci.