Vox pathfinder 15r reverb issue

[Arbutt]

Hi everyone.
I have a pathfinder 15r with no reverb
I understand its a practice amp. But the owner
Really loves it. So please no bin it comments
On inspection I can see the tank is ok
128ohm input 228ohm output
I connected up the signal gen and I can see the signal on the input. Output signal is very weak. If I rattle the can just hear it through the speaker.
I connect up a speaker on the return and tapping the speaker can't hear anything

I feel sure it's a return issue?
I have decided to try a few odd tanks I have around. Still nothing.
Changed the op amp. And checked supply voltage ok
Hardly any signal getting to pin 6 of op amp with same on pin 7.{ic5} Checked and changed the reverb pot
Working well apart from this. Tremolo working

I've run out of ideas. What's going on. Am I barking up the wrong tree

Map to follow

[dmeek]

Plug your signal generator into the reverb return jack. Signal level at the jack and at pin 5 should be the same. Level at pin 7 should be much greater, if it's the same as pin 5, C44 or R59 is open or C43 is shorted.

[Mick Bailey]

Also measure the end-to-end resistance of the connection leads as well as checking for shorts.

[Arbutt]

Thank you. You were right I had a hunch on the caps. But I dismissed it. Was c44. Replaced it back working correctly
Thanks again.
arbutt