upgrading the ibook clamshell's L2 cache to 1MB

[Phipli]

Don't know what setting I need (ºC?) nor what distance to hold it at.

350° probably - depends a little on what solder and thermal mass you're working with, and start further away and work inwards with time. If you can see the orange of the elements reflected in the solder resist, you're perhaps too close. Put a bit of flux on first, it will mostly flash off, but generally helps getting the solder to flow more easily. Poke the component gently to check if it is free, don't pull / push hard on it when it is not free or you might damage a pad.

Practice on an old VCR board or something first ask neighbours / family/ charity shop if they have any broken electronic devices so you can find something to practice on.

Regarding popcorn, stick it in the oven at about 70°C for 45 minutes before you start if you're worried. Don't burn yourself on it. Generally things are ok if they've been in a heated room / summer.

 

[Phipli]

But I don't really get why they pop, because surely they're completely airtight?

Moisture can penetrate and can expand when it becomes vapour.

Allegedly. It's never happened to me and I live in a cold damp house.

 

[Bolacore]

One thing I've found that really helps is ChipQuik - it's not super cheap but it has a really low melting temp compared to regular solder and for anything thats not a huge chip it makes it really easy to desolder things, often dont even need hot air. I am by no means a hot air rework specialist, so for any chips I've not had handy replacements for I break out that stuff.

 

[alectrona6400]

@LightBulbFun would it be possible to put the 7400 into an iBook clamshell? or should i go for the 7410

 

[LightBulbFun]

Perhaps @herd can give us more information, but I believe these iBooks use a 3.3V cache, which is incompatible with the MPC7410; only the MPC7400 can be used. The MPC7410 can be used if the model doesn't have an L2 cache.

pretty sure the iBook G3's use lower L2 cache voltages, they are Uninorth machines, I have 7410 swapped one in the past without issue, as have a few other folk

@LightBulbFun would it be possible to put the 7400 into an iBook clamshell? or should i go for the 7410

i'd go with the 7410, its a cooler running chip much better suited for a portable, espically if you get one of the MPC7410RX500LE MPC7410's from eBay etc you can run those at 1.8V