sony msx HB-75P picture problems

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By AndreV

Master (198)

AndreV's picture

08-10-2022, 15:01

https://www.youtube.com/watch?v=GaUwipUvfbs

this is a sony 75p with 4164 ram modify and explenation.

By AndreV

Master (198)

AndreV's picture

08-10-2022, 16:29

frogyfogy wrote:

so i can swap the 8x4116 ram chips with the 4164 Spectrum "Upper RAM" Chip it will be compatible without modifying anything else just desolder and solder new ram?

When you deside too desoldering be verry careful cos the pcb is made from cardboard, and easely you can damage the traces, and better use the ic sockets so u can swap the rams easy.

By frogyfogy

Supporter (6)

frogyfogy's picture

08-10-2022, 19:28

thank you for the link Andre its look like he have very similar lines on screen when he plug in that ZX SPECTRUM on 4:29 minute with bad ram so probably its a ram fault so will try to buy this ram chips.

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