Electronic – Component identification 8Y

componentsidentification

I hope someone can help I am trying to find out what this component is so I can hopeful replace it

The device is a Fluke Network Management device

the unit works for about 2-3 minutes depending on temp then gives out a high pitch squeak the unit keeps flashing looks like there is life but the unit stops responding
I first thought it was the PSU from where the noise was coming from

I striped the unit down set it up on my desk plugged it all back in and waited the noise not sounds to come from the main board in the photo it is where a second board plugs in and the power supply comes from

All the but has on it is 8Y I have looked high and low the best I got to was a 3 pin transformer or a rectifier but not 4 pins plus I'm not sure if the specs are the same or if its a transformer or a rectifier

I am going to pull some none working devices apart to see if there is one in something else

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Update

I have not received very much from Fluke nothing from technical

So to get things moving I have removed the part not the cleanest of removals but I just sniped it off
enter image description here

It looks like a common mode choke with help from people on here to me but its the values of it that I'm not sure of, is there any way to work it out the unit will take 100-240 VAC 47-63Hz 25 Watts not sure if this helps

would this be a replacement TDK ZJYS51R5-2PT Choke

I've got nothing to loose the unit stop working after this bit gives a high pitch noise

If anyone can help me would be good

Thanks

Best Answer

The board designators seem to be following IEEE STD 315 (kind of).

CR or D: Crystal rectifier (Diode) T: Transformer.

My guess is that this is a common mode choke on the power supply lines.

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