AIWA VCR HV-F85AE - very dim display

[Emanuele Girlando]

Checked caps around but none seems bad.
Applied the overheating filament procedure as suggested in the newsgroup
FAQ - little improvement but definitively not enough.
Any suggestion?
What voltages do I have to expect? Filament is 4,5VAC biased at -16VDC.
Other lines to the driver are -30V and -20V..
Does anybody has the power supply diagram? (or other relevant parts..)
Thanks.
E.G.
--
Emanuele Girlando (IW1DHI)
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[Emanuele Girlando]

has anybody got an idea??
tks

 

[michael turner]

has anybody got an idea??

Perhaps it's just that the display itself is knackered. They are a
thermionic device (vacuum-tube/valve), and so will have a limited
lifespan, go low-emission, soft, whatever.