hueyjones70

Omniview is fully compatible with the XL/XE OS.

Are there options concerning the boot up languages/games. Could I get Omniview XE or would I need to provide my own EEPROM?

If I could get some conductive glue I would do most fixes with fine wire.

I bought a conductive paint pin at least three years ago and I am still using it. It is a BUDDY PAINT pin that uses silver, nickle, and copper. It has been discontinued and it received mediocre reviews but the longevity is great and i have used it to repair keyboards (800xl and 1200xl); repairing traces and repainting dots. I have also used it to repair some motherboards, but I always followed those repairs with wire.

I have this one that is not listed: 83S DA 037233 183

I just successfully completed another SV 2.1 on a 600XL. I found it is much easier to follow the instructions provided in the Best Electronics upgrade package. Those instructions have you install components from right to left and that makes it easier to get everything in the right place. After all the parts are installed then I replace ones that the SV 2.1 calls for. The S video is really good but the composite has a lot of color bleeding.

I was checking the matrix from the pinch connector and from the pins on the bottom of the board and getting different results so I removed some solder from the pins and resoldered the pinch connector. Now everything is working correctly. If it is working correctly tomorrow, I will believe the problem is solved. The computer and the keyboard are working perfectly today. Problem solved.

it is fairly easy to cut the mashed part off and remove the brown part. Afterwards you can get some scrap plastic and use a soldering iron to secure the brown casing.

Do the numbers represent pins on the pinch connector.

This is totally irrelevant to the current topic but this 65XE that I have has the best stock video that I have ever seen on an A8. No jail bars and crisp well defined characters.

I think the problem was with some old solder joints. I touched up the joints on the DIN connector and all of the resistors in the area of the 4050 and when I hooked it up again, all was working.

I have just finished getting an 800XL back into operation (ALMOST). I had everything working after doing a SV 2.1 mod. Keyboard worked perfectly, had good video with only faint vertical bars. After putting it back together, I have no video, just a black screen. The computer makes the boot noise, I get keyboard clicks, and audio with game carts. I took it apart back down to the bare MB. Still no video, swapped out the major chips and the 4050, still no video. What are my possibilities. I don't have an O scope and my trouble shooting is restricted to a multimeter and replacing parts.

Mine has 8 4164 RAM chips and 8 empty slots; just like the one in the pictures.

My 65XE has the same MB as the one in this thread except that it is a PAL. Does that make any difference?

If I just want to make my 65XE into a 130XE all I need to do is install the sockets in the empty column, fill the sockets with 4164 or equivalent RAM chips and install the CO25953 in the left most slots of U34? I saw a 74LS95 mentioned, where does it go?

I guess that in this situation less is more.

I found a way to mess this mod up. I performed this mod on an 800XL and mistakenly used a 2.2k ohm resistor instead of the 2.2 ohm. The result was a blank screen. Examined the resistors one by one to find the error.

My latest observation is that when it boots and has that momentary period before it goes crazy, the function keys do not work correctly. If I boot with PacMan, the start key changes the number of players and the select key changes the level of difficulty. Help does nothing. Reset resets.

Should all of the ram chips have similar voltage on corresponding pin numbers?

I have found that I must do a significant amount of work before doing any mods. I hadn't done any testing of the computer. The first time I turned it on, it booted to BASIC, I typed a few keys and saw that the KB needed work, then I checked S-video and saw that I had color so I decided to take it apart. I noticed it had a socketed FREDDIE and 6 of the 8 RAM chips were socketed as well as the OS ROM. I socketed the other two RAM chips and went to test it again. It booted to BASIC and after a couple of minutes some of the letters in READY changed and random characters began to appear on the screen. I rebooted and the computer went to self test and again, random characters began appealing on the screen. After that, I couldn't boot to anything and STAR RAIDERS wouldn't boot. I tried SYS CHECK and it appeared to be working but the characters would randomly change. Sometimes syscheck would show some of the ram chips to be defective and sometimes it goes directly to display all ram failure. I am going to have to socket all of the chips so that I can do some troubleshooting. I think I have a PAL 600XL that will provide a test computer.

I have installed one before in a 1200XL but I didn't have flashjazzcat's BIOS.

I was considering adding a Rambo or Wiztronics 256K. I don't want to bother with the U1MB because I honestly don't want to spend the time learning how to use it.

I just opened up one of my eBay purchases and found one of these. Is there any info available concerning memory or video upgrades.

If anyone has a hopelessly nonworking 1200XL, I have an extra working MB and KB. Maybe we could work something out.

Does the Peterson upgrade work on a 65XE that has 64K and only one column of RAM chips.