tandrews_ny

surprised no one has made a replacement part. seems like it wouldn't be too difficult?

So if they are bad, no real replacement is available? I have one that just gives me a blue screen, nothing else.

I use a desoldering gun and heatgun. No pulled traces yet. Something I was wondering...how do I replace the grom chips? Are they just eeprom ?

Another one saved. This is two I've repaired. Thanks so much. Waiting on the ram I ordered to do a full replacement job on these.

https://www.ninerpedia.org/wiki/File:Vram_df.pngTHATS the exact issue my friend. I have bookmarked those pages for future reference. I wasn't sure what to search as sometimes...its not easy to articulate my thoughts. I'll be fixing this tonight!

will try tonight.

Sadly, putting a cart in results in just a mess. I haven't tested basic, but I can tell you the numbers don't render either. I can't determine if the issue is even RAM related. It did have one bad module which I replaced.

I have been on a TI-99 repair spree. I have one where there is text (letters) where the color bar should be. This is on the top and bottom of the left color bar. Everything else looks good. I've tried replacing a few VRAMs and have had no luck. I've tried different GROMs too. Anyone seen this before? I can get a picture if necessary but I'm currently at work.