Jon Boy

Photos of topside also chaps.

Sorry, i just noticed the switchbank photos were uploaded upside down! For clarity, numbers 6, 8 and 10 are up!

Hi Guys, thanks for the replies. I have not tried swapping the EPROM yet, just in case any damage is caused to the new PCB, at least until i get some more feedback from you guys. It is very difficult for me to get Marquis spares over here in London, England, there isn't any Marquis dealerships in London anymore. Please see photographs of the new PCB, hope you can make out the switchbank okay. As i said, all wired and set up as per the dead PCB i took out. Again, any help really appreciated chaps. Jon.

Hi again Cranbiz, i just checked these, so on the new PCB, the label on the EPROM reads GS501ZR2B 1A04. On the original PCB, the EPROM label reads LZM2ER2A 20080407, so you are correct, there is a difference. I will change them over tomorrow to see if this solves the problem. Thanks again.

Hi Cranbiz, thanks for taking the time to reply, i will take a look when i get home shortly

Hi, can anyone help me with the following? I have a 2009 Marquis Mirage spa. Recently, the PCB packed up, I bought a like for like (GS500Z) replacement, and set it all up exactly as the one that had died. The spa works, but the temperature control button now switches on the jets, the jets button does nothing, and the settings button changes the temperature. As i said, the wiring and the dip switches are all as before, any possible solutions please? Cheers