[vecher]

OK, Have been using this for a while and all was good.. I tried to turn on tonight and nothing.. NO indication on meter for Line adjust.. I checked the switch and it was good..

Anyone know what the resistance of primary of transformer should read?

I hope the transformer didn't go belly up??

Skip

[Phlogiston]

I think one of the bulbs (51) is a fuse.

[morzh]

There is that main bulb which is never lit and which is the fuse. Right by the switch. Check that first.

[vecher]

Yup Did that.. Was able to get it sort of working..I think it has something to do with the power cord..If I plug it in to different sockets I get different readings.. So will replace it first to see if that's it..

Skip

[John R]

Skip,
Yes, the Hickok 600 series testers are notorious for the power cord wires inside the rubber jacket crystallizing . Use at least 16 AWG.
If you strip the old jacket off after replacing there is greater than 90% chance you will find crystallized wires. Mine were bad the entire length of the cord. Manufacturing problem 
John

[vecher]

OK replaced power cord Still same problem.. Here is what i noticed..

When you set the line adjust pot to read the right filament voltage the meter reads say X When you push p7 again meter reads different say Y But filament voltage doesn't change.. So tells me it some where in the Line adjust circuit .. something is intermittent maybe the push button.. I did clean the contacts and it seems to work OK.. I will try to draw out the line adjust circuit..

Skip..

[vecher]

OK,, Need to know what the resistors are bin following pictures.. R1,R2 ETC.. And values.. Mine seem to not be whats on schematic some of them.

Starting with these..

[Image: https://farm2.staticflickr.com/1808/4246...5ce5_b.jpg]



[Image: https://farm2.staticflickr.com/1763/4246...22a9_b.jpg]


[Image: https://farm1.staticflickr.com/833/42465...00b9_z.jpg]

Thanks
Skip