Scantronic9800 full working order but

the transformer makes an intermittent buzzing that is driving me mad at night.

tried reseating & packing but little improvement.

The metal alarm box/cover seems to amplify the noise too.

any thoughts on a fix much appreciated 

 

Most will say the panel has done it's time, I'd agree. You say it's in working order but what tests have you done to prove this? how regular has it been maintained over it's life?

Buzzing transformers are often a sign of overloading when it comes to alarms they can go that way with age but usually if you test the panel has too much load.

Occasionally it can be the mounting of the panel is uneven and amplifying the sound which can be checked but usually it just a sign it will fail.

If you really what you locate a replacement with the same rating you could, but it will not be long until something else will give up.

31 minutes ago, Clairol said:

Scantronic9800 full working order but

the transformer makes an intermittent buzzing that is driving me mad at night.

tried reseating & packing but little improvement.

The metal alarm box/cover seems to amplify the noise too.

any thoughts on a fix much appreciated 

 

Ebay have used ones cheap enough to try 

 

I assume you made this post at the local library if your not upgrading your tech much , good to repair I guess 

4 hours ago, Clairol said:

any thoughts on a fix much appreciated 

 

a 9800 could date back to the 1990's, buy a new alarm control panel with switch mode power supply ?

 

 

Is your telly 30 years old or your fridge? if this alarm panel was a car it would be classed as a classic, and there are collectors out there that would buy it off you you can then get yourself a nice late panel with a quiet switch mode psu that will consume less power too