Perhaps it is a 7 volt zener? The CRL and HS probably stand for other electrical characteristics. I'm afraid I don't very often use zener diodes, but I hope you can get the answers you're looking for
Good luck!
Der Strom
Are you thinking that the diode is not good anymore?
It's difficult to tell from the image, but it does not look "fried" to me.
On the other hand, the image of the board you linked to ... those old cylindrical brown-body carbon resistors can radically change their values over the years - even if they are not in use. I would consider every one of them to be suspect until I had at least measured their resistance.
I had a collection of mil-spec precision carbon film resistors that were left over from a project back in the 1970's; they were unused and in hermetically sealed pouches. I was very surprised to find that some of them measured almost twice the resistance that they were supposed to measure; and almost all of them had increased in resistance significantly.
Zener diodes require a certain amount of current flow through them to establish the correct voltage. If the current flow is insufficient, the voltage drop across the Zener may be considerably lower than expected.
I would check each and every resistor in the current path for that Zener to ensure that they were reasonably within specifications.
Replacing all of those brown-body resistors with similarly rated carbon film "dumbbell" resistors would be a good idea; as these newer type of resistors are very stable over time.
Thanks.
I check resistors, they are good.
Check "zener" one more time, show 1,17v one side and infinity other. I thought 1,17 are too much for diode. If it OK, may be its good?
Thanks for the picture. No, it does not look like a point-contact diode.
As SgtWookie says, what would make you think that this diode was faulty?
It might help if you told us from where this board came. What was the function of the circuit?
Send us a photo of the whole board if you can.
Made in India, have no idea where it sitting and what doing. Manufacturer didn't answer. Have to repair. I thought it faulty because testing with Fluke 115 and get 1.16V (infinity other-side) and think its too much. Now I am not sure about it.