Heidelberg SM52 CPC Display Blank

Hi Everyone, I'm new here (also just owned SM52 Machine)
Lately my CPC screen loading super slow, took like 30-40 minutes before finally boot up.
Yesterday it goes all blank. I called the repairman come and first the check that one of my powersupply was burned, then i get it changed, then it able to boot into the program but only for about 15 minutes, it goes blank again. The repairman then said that my DNK Card is broken, they keep changing the IC on my DNK Card but seems not solving the problem, at last he said might be the eprom problem. Is there any ways to flash the Eprom? or anything i need to look about?

Thank You all for your help, my repair cost of the machine (including the roll adjustment, blower, etc) have been too much, that i dont think i can afford to replace the card...

 

Hello dear sir, could you show the screen through a picture? Thank you very much

 

Hi Sir.. Thank You for your response.
Here is the picture

 

Hello,
It seems DGP module has got some problems. Open the cover and on the back, close to the top, there is a module with a small card on it called EPM. Switch off the console and push the card in to the other module and switch ON and check if the image is showing or not.

 

Ok, i m doing it right now.. will let you know... Thank You

 

I did that, and it shows image on the cpc, however when i swap the card, the other module going blank...

 

Hello dear sir, please could you show us what Mathieu told you so that we can move forward?
Please picture

 

Hi Sir, i finally replace the DNK2 Card and it works, seems the Eprom on the DNK Card if broken, any ways to repair it? such as Flash Eprom?