mac plus ram upgrade shame

#1 Sat, 16 May 2009 - 14:14

ok it is with much shame and embarrassment that i must say that i have a mac plus, and to get more than 1mb of ram working i cut the resistor -this was part of another fixing looking around, i thought why not just do it when i was inside - anyway, i cut the wrong one!!

yes yes yes a school-boy error if ever there was one. worse i threw it away so cant just re-attach and start again.

so, anyone know the value of the R6 resistor?

Wouldn't it be cool (for me!) if it was the same as the R8 that i should have removed!

i know nothing about resistors, so either the value of the colour banding will do, i am sure i can find the correct one from there.

yes yes yes, i am a bloody idiot! :I

#2 Sat, 16 May 2009 - 18:05

This brings to mind one of my favorite quotes:

Experience is what you get just after you need it.

Gary

#3 Sat, 16 May 2009 - 18:46

Looking at this picture of the board, R6 appears to be 10kΩ ±5%. Should be easy enough to find a replacement for, somewhere like Maplin should have them for a couple of pence...

#4 Sat, 16 May 2009 - 20:37

thanks for the pic - so you make it, from the bottom up as in the picture - brown black orange gold?

#5 Sat, 16 May 2009 - 21:13

That's what it looks like to me – the gold band is pretty hard to see, but it's there. Since 1% resistors are common and cheap these days, there's no reason to use one of those instead of a 5%. The colour code for a 10kΩ ±1% resistor would be brown, black, orange, (gap), brown.

#6 Sat, 16 May 2009 - 21:45

you are a star. Thanks lots.