Jump to content
Frankie

Easiest way to fry an Incognito ? Did it twice

Recommended Posts

I have 4 Incognito's. At one point they all worked. I started with one of the original's and all was happy. The new batch came out and I bought a spare. Somehow I fried my working one. No video output. I thought it was something with my Sophia. I swapped my spare in and it worked. Huh.. ok, well, I'll try not to do that again.

 

Then I did it again. Incognito stopped working. No video. xilinx chip seems fine, I can read and write it. .. Bought another two more Incognitos. Have a nice working one and a spare.

 

Is there any troubleshooting I can do? Can I swap out that big square chip?

 

Share this post


Link to post
Share on other sites
Posted (edited)
4 hours ago, shoestring said:

How did you brick it ?

 

If you have the original boards, then this might help.

 

 

I honestly don't know how I did it. I was working on it with the cover off and I may have shorted it out (touching the back of the board to some metal).

I thought it was just a fluke, then I did it with another one.  I have both an original and a first batch Lotharek.

Edited by Frankie

Share this post


Link to post
Share on other sites

Don't feel bad. I'm no stranger to that actually, having recently shorted out the video DAC in a machine recently.

 

Those Incognito boards don't look easy to troubleshoot. Might be best sending them off to Lotharek to get fixed. 

 

Share this post


Link to post
Share on other sites

Is that a new service? last I knew unless defective and within a period of time, it wouldn't be replaced or repaired... maybe it's best to ask @lotharek if he will or won't... I have tagged him in this message to get him reading your' plight.

Share this post


Link to post
Share on other sites

Not that I am aware of. It would not be covered in his case based on the cause. Though its still worth finding out if he is willing to exchange or fix the board for a price. 

Share this post


Link to post
Share on other sites

You have to solder two jumper wires on the underside of the motherboard, are you sure they aren't shorting on any form of shielding? Also, are you are using the first slot?

Share this post


Link to post
Share on other sites

My daughter fried an original before i had a chance to get it working properly. i think she plugged in 2 carts, both left carts, in to both cart slots while turned on.

Not happy at all...................

 

james

Share this post


Link to post
Share on other sites

I think the originals required 2 resistors soldered inline (or changed on the 800 motherboard) to avoid over-volting the Incognito when carts are plugged in.

Share this post


Link to post
Share on other sites

Unless the Xilinx chip is boiling hot, it's possible this is just a corrupted PLCC flash ROM. Buy yourself a TL866 USB EPROM programmer and reprogram the chip before you assume the worst.

 

When you say 'No video output', do you mean a signal with a black screen, or no signal detected by the TV/monitor at all?

 

 

Share this post


Link to post
Share on other sites
3 hours ago, flashjazzcat said:

Unless the Xilinx chip is boiling hot, it's possible this is just a corrupted PLCC flash ROM. Buy yourself a TL866 USB EPROM programmer and reprogram the chip before you assume the worst.

 

When you say 'No video output', do you mean a signal with a black screen, or no signal detected by the TV/monitor at all?

 

 

Well, the monitor goes from power-save to on, but it's just all black. Not sure what that is considered.

Share this post


Link to post
Share on other sites
4 minutes ago, Frankie said:

Well, the monitor goes from power-save to on, but it's just all black. Not sure what that is considered.

That just means the OS failed to boot. So you should first try to reflash the ROM using the aforementioned external programmer.

  • Like 1

Share this post


Link to post
Share on other sites
21 hours ago, flashjazzcat said:

That just means the OS failed to boot. So you should first try to reflash the ROM using the aforementioned external programmer.

Do you have a jed file for the xilinix chip so I can-reflash that as well? I figure I should make sure everything has been updated. My USB EPROM programmer arrives today. I can pull that image from my good incognito. (I can't pull the xilinix chip firmware because this board version has no jtag header).

 

Share this post


Link to post
Share on other sites

Sure. Try reflashing the ROM first though. There is absolutely nothing to be gained from flashing the CPLD if it starts working again (the update with extra features not yet being ready).

 

Share this post


Link to post
Share on other sites
3 hours ago, flashjazzcat said:

Sure. Try reflashing the ROM first though. There is absolutely nothing to be gained from flashing the CPLD if it starts working again (the update with extra features not yet being ready).

 

It's ALIVE! I reflashed the SST chip (I don't know what it's really called) and my incognito came back to life!

  • Like 8

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...