MFJ Versa Tuner V MFJ-989c lamp in meter does not work

The MFJ 3KW PEP Versa Tuner 989 C  is a versatile tuner designed for use with HF bands. It is compatible with a universal range of brands and is specifically tailored to fit two-way base radios, ham radio transmitters, ham radio transceivers, and ham radio receivers.  This tuner offers convenience and flexibility for amateur radio enthusiasts looking to optimize their radio communication equipment. MFJ-989C Versa Tuner V