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Typical Video Board issue with all Mac SE versions and SE/30.

http://www.mouser.com/ProductDetail/Texas-Instruments/SN74HC166DRG4/?qs=sGAEpiMZZMtsbn1GaJysl2mUpBXeSqm3MB4LGbg4Gc4%3d

i am wondering if this will work.

36 ea cents for 10

Manufacturer: Texas Instruments Product Category: Counter Shift Registers RoHS:
icon_rohs.gif.e79042bbbaf31a47862c3b4dd87be8e7.gif
 Details   Brand: Texas Instruments   Counting Sequence: Serial/Parallel to Serial Number of Circuits: 1 Package / Case: SOIC-16 Logic Family: HC Logic Type: CMOS Number of Input Lines: 9 Propagation Delay Time: 150 ns, 30 ns, 26 ns Maximum Operating Temperature: + 85 C Minimum Operating Temperature: - 40 C Packaging: Reel Function: Shift Register   Mounting Style: SMD/SMT   Number of Output Lines: 1   Operating Supply Voltage: 5 V   Series: SN74HC166   Factory Pack Quantity: 2500   Supply Voltage - Max: 6 V   Supply Voltage - Min: 2 V   Unit Weight: 0.004938 oz
 
Finally I changed that chip and the screen issue gets solved!
But my joy didn't last too much. After some reboots, system won't start up any longer. I get the blinking question mark... I checked hard disc cable but it's well plugged. What could be happened?

 
That video board is seriously the only thing that causes that to happen?? Guess I'd better hold on to that analog board I wrote off two years ago and try it with a different video board; I definitely have three or four extra video boards just sitting around from dead analog boards!!!

 
so the above post is re this part:

http://www.mouser.co...qm3MB4LGbg4Gc4=

i am wondering if this will work.

36 ea cents for 10

ManufacturerTexas Instruments Product CategoryCounter Shift Registers RoHS
icon_rohs.gif.e79042bbbaf31a47862c3b4dd87be8e7.gif
 Details   BrandTexas Instruments   Counting Sequence:Serial/Parallel to Serial Number of Circuits1 Package / CaseSOIC-16 Logic FamilyHC Logic TypeCMOS Number of Input Lines9 Propagation Delay Time150 ns, 30 ns, 26 ns Maximum Operating Temperature+ 85 C Minimum Operating Temperature- 40 C PackagingReel FunctionShift Register   Mounting StyleSMD/SMT   Number of Output Lines1   Operating Supply Voltage5 V   SeriesSN74HC166   Factory Pack Quantity2500  Supply Voltage - Max6 V   Supply Voltage - Min2 V   Unit Weight0.004938 oz
 
In this case with my order of 10.  I emailed orders@mouser.com

Told them to add 10 to my 1st class order that i had placed the day before. Because i knew it hadn't left yet anyway.

They said no they could not add it.  But would send me these out first class on them.

so i paid my 3 and change and got here the same time as the other order.

 
Hi, I've a similar problem with a Macintosh Classic II.

I've replace the 2N3904 transistor on video board, without positive end.

Do you know what is the UE8 equivalent on Classic II? I would try to reflux the solder point.

Thanks.

ClassicII.jpg

 
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