I am comparing my friends non-working Whitestar CPU-board and mine (working pcb). We both have LOTR. His is a LE, mine an original but both have same revision cpu pcb.
His is not booting at all. When you turn it on the GI lights come on but nothing more happens. We have tried swapping ram, rom and sound rom but no change. There is no acid damage.

When I move the pcb to the test bench mine has clock signal on test points E and Q. His pcb has no signal there, or anywhere else.
When I measure on crystal oscillator Y1 my working pcb has 3V on pin 1. His pcb has zero. If I interpret the Stern schematics correct it seems pin 1 is not connected and according to datasheet for the oscillator there is an internal 'pull-up resistor', thereby giving an active state.

This morning I tried to simulate a 'pull-up resistor' connecting a 100kohm resistor from 3,3V to pin 1 but there were not any clock signal anywhere... (I measured about 110kohm on my pcb, thereforte I tried 100 kohm...)

Does anyone have any info of how this crystal oscillator work?
Am I correct in suspecting his oscillator is broken?

Attached pic is from Stern schematics and datasheet.
Link to datasheet: https://www.mouser.se/datasheet/2/160/h5c2e-1166946.pdf

40Mhz oscillator (resized).jpg

Yep, there is 3,3 volts at pin 4 and pin 1 is not shorted.
So I guess we have to order substitutes for this oscillator? Unless anyone know where to get original ones?

Mouser has several with the right package (Dip-8) but from other manufacturers. Pinout seems to be standardized. I hope one of them will be a matching substitute.

I have checked both with oscope and logic probe and there is no pulse on Q, E or pin 34-35 on 68B09E. Just nothing... (Well, a Zero with logic probe on q and E)

Zitt - If you, by 'pull', mean physically remove R502 and 509 I'd rather not. They are SMD and I have extremely little experience soldering smd stuff. Or did you mean something else?

barakandl - TY for advice on substitutes.

Before posting this question I searched for a week on various forums and oscillator failure seems rare. But I have a hard time finding any other solution plausable since I have nothing on pin 1.
(Note! - Stern number the pins 1-2-3-4 but standard pin numbering is 1-4-5-8)
Not only am I seeking help, I'd think it might help somebody else in the future...

Thanks for the replies!

Some soldering required, I guess...
I always try to do as little soldering as possible on any board. You just never know what happens with pads etc. Even though I'm fairly good at it...

It's easy to just swap the oscillator, cheap too, but I just put the question here to see if you had any other suggestions before doing soldering.
Always socket if possible...