Ron Miller D.T.V. Texas IC 271 is the jungle,what are pins for horiz drive and horiz Vcc? This is A TDA8373C DOESN'T seen to be the same as TTDA8373 found pinout for it , but not the same. Model 25TR15 Chassis: 25B800 VERT OK NO HV START UP AT ALL.thanks Ron Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.