Zx80 blank screen

[Speccynut]

I bought this with no modulator, put one in, I have blank white screen with no cursor. Checked chips V in all had 5 volts.Ic 2 slightly warm but not excessive. Any ideas. This is issue 2.

[1024MAK]

Typically this is a fault with one of the two SRAM chips. But there are other possible causes, including the ROM, the Z80A, or some of the smaller chips.

Can you please post up a photo of the board.

What test gear do you have?

Mark

[Speccynut]

I have a multimeter. Sorry for delay on getting back to you. I think I've attached a photo.

[1024MAK]

To attach a photo, use the Attachments tab below the text box, or if using a PC with modern browser that allows drag and drop, drag a photo file to the text editor box window.

Mark

[Speccynut]

Tried again hopefully now a picture