501 wont power up no light

[skinerd]

501 that wont power up no green light, but you were able to get system info and it would download the guide. then i erased SA52,54,60 now it wont take update been in stream for over 2 hours and it wont update, and know i get no system info no nothing just fan running.

Erase both flashes completely and reflash tsop #2 ONLY, with an update backup flash.

[skinerd]

tried that erases fine but when i try to program it says flash is not blank after i erased 6 times and if you hit continue anyway it say error programing flash at offset 0x7fc00000. with or without OJ1

If U7 is a GT chip, you will need vid mod.

[citrus13]

I had that problem too.....
I fooled around with mine for 2 days...
Finally I realized that I needed a third hand to hold the jtag in place...
Just that slightest of movement and i had the same error reading...
Just a thought..