Any Members from Louisiana? Baton Rouge Here.......

Quote from: BigDumbDinosaur on March 17, 2010, 02:54 PM
The first thing I'd do is immediately after power up but before attempting any kind of disk operation would be:

100 OPEN 15,8,15
110 INPUT#15,E,E$,X$,Y$
120 CLOSE 15
130 PRINT E,E$,X$,Y$

Run the above and and see if you get a response from the drive.  Right after power up or a hard reset, you should get a DOS version.  If you do, that rules out a lot of the electronics.  If not, you've got some troubleshooting to do.

Okay i will try that. Thanks.

I picked up this 128DCR Last week off of Ebay for $29. Yes $29.



It supposedly works and needs a little cleaning. But the factory seal is still intact on the back. What do you think? Good deal?

So i could not see anything obvious that was wrong. So i got one of those diagnostic carts. this is what it says....



Says 6526 and 6581 chips are bad. So what do i do now? Get some new chips? This will be my first attempt in repairing a C128 so any tips and advice will be helpful. Thanks.

I let the test sit there for a few minutes. It never said it was done just kept cycling over and over.

Quote from: RobertB on March 05, 2010, 04:57 PM

Quote from: roushinator on March 05, 2010, 11:33 AMIf i dont trade I want to add a fan for sure. What are the other suggestions? JiffyDos?

JiffyDOS, yes.  Also there is agreement on the forum here that heatsinking the important chips is a good idea.  You can also fill up the empty socket on the board with a function ROM, the best being the Megabit 128 ROM adapter.

Truly,
Robert Bernardo
Fresno Commodore User Group
http://videocam.net.au/fcug
The Other Group of Amigoids
http://www.calweb.com/~rabel1/
Southern California Commodore & Amiga Network
http://www.sccaners.org

This is probably a dumb question but where is the best place to get the Megabit 128 ROM adapter?

Quote from: pearsoe on March 06, 2010, 04:31 AM
You might want to go through this article as it relates to 1571 drive troubleshooting and solutions. The problems discussed are common with the 128D also:

http://www.commodore128.org/index.php?topic=2236.msg8996#msg8996

Cool. Thanks for the link.

Quote from: Blacklord on March 05, 2010, 02:42 PM
Why would you trade ? this one looks to be in excelllent condition!

Thanks. I would only want the other one back for sentimental reasons.

Quote from: cbmguy on March 05, 2010, 02:53 PM
Have you checked the CN12 interface on the board just behind the drive?  It's the one with the black cable attached to it.  it it's not properly installed (or not installed), this problem you're having will happen.

C

It looks to be installed correctly. the red cables on the plug are on the side near CR103. The Green light on the drive does come on when i power the computer on.

So i need a little help. Just got my 128CDR and it powers up fine. It will go into C64 mode fine. But when i try to load a game it sits there. Drive does not try to access the floppy.  It says "searching for" and nothing happens. Any ideas. Thanks.

Ryan

If i dont trade I want to add a fan for sure. What are the other suggestions? JiffyDos?  I know about the stuff like the 1541 ultimate, supercpu, etc... but what else can i do to the 128 itself?

New member here but not new to Commodore. I had a 128DCR as a kid and played 1000's of hours of games on it. I sold it a couple of years ago. But picked up another one a few days ago. Here it is.









I know who has my original one. I might email him again and see if he will trade my original 128CDR for this and a few $$$.