Need troubleshooting help for a JVC R-X350VB combination tuner/amp.

I have a JVC R-X350VB FM/AM Tuner amp combination that was sent to me after someone installed 4 new audio transistors. Unfortunately the FM/AM tuner does not work. The LCD display does absolutely nothing. The other indicator lights light when buttons are pushed but there is no output and no frequency or other display on the lcd itself. The person said the unit was working when they shipped it but did not work when it arrived. I have had 4 of the 5 circuit boards out and looked for broken pc lans or bad solder connections/wires or bad parts but nothing is obvious. I have 5v at the display board ENC-012-2 and also have about 2v on the Buc line coming in. Voltages all seem to be going to the various boards correctly but nothing works other than just the indicator lights. When turned on I can hear the relay move after about 10 seconds or so but no other indication that anything is happening. Can anyone offer any helpful suggestions? Thank you. Reply

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