Mac IIvx - No Boot

[Rony Okal]

Hello, i have Macintosh IIVx and dont have boot up ( no video, the lcd get scoure from the computer , but black screen. no apple logo , just nothing. )

i didnt hear any beep.

I sprayed the board with contact cleaning spray

What could be the problem?

 

[Daniël]

Has it been recapped and thoroughly cleaned? I know from experience that these machines will fail to start up if capacitor leakage is present on the logic board, particularly around the EGRET chip (behind the PDS Slot, there is silkscreening to its right denoting it as EGRET). If this hasn't happened yet, it needs to happen sooner than later to prevent further damage from the leaked electrolyte fluid, which is corrosive and will damage chip/component legs and traces if left untreated.

 

[Rony Okal]

Has it been recapped and thoroughly cleaned? I know from experience that these machines will fail to start up if capacitor leakage is present on the logic board, particularly around the EGRET chip (behind the PDS Slot, there is silkscreening to its right denoting it as EGRET). If this hasn't happened yet, it needs to happen sooner than later to prevent further damage from the leaked electrolyte fluid, which is corrosive and will damage chip/component legs and traces if left untreated.

have you draw for reccaps? if yes please send me