Earth continuity fault

[20%cooler]

hi all,

I have this old reel to reel tape recorder that failed it's PAT test due to an Earth continuity reading, any ideas how to fix this?

it is very old and has a few valves inside
I am fairly new to electrical work but am very determined to get this thing working

 

[DPG]

need to fix this problem before I even attempt to power it up

You do indeed. Still not entirely clear that earth connection though - the image is a little cropped at the top. Does it go to the chassis, or just to a terminal? Daz

 

[Lucien Nunes]

Ah, I understood that it had been in use and working, but just failed the PAT. If not, do not power it up. You can turn a small problem (shorted capacitor) into a big one (burnt out transformer) by not doing the repair BEFORE powering up. Many of the old consumer electronics I see with major faults were OK until someone tested it after a long period of disuse, because capacitors often fail in storage. I see one capacitor (probably the output valve coupling) has been replaced not so long ago, it's the bright yellow one, how long ago do you think it was last used?

The mains lead earth (green) is soldered to the amp chassis punch tag, so you should have solid continuity there. Post the actual test result in ohms.

What is your experience with electronic repairs - can you test components, voltages etc?

 

[Noob2013]

Chuck It in the skip!

 

[20%cooler]

well, I do have a volt meter/amp meter, but it's only very basic

 

[Noob2013]

I'm kidding mate. Best of luck with the repair