2channel HV control cards inventory and reported failures/repairs


Written on 15/04/2008 B.Palan

ID     Status    failure               Date			Location
------------------------------------------------------------------------
M441   repaired   ch2 TRACO TMV2415S from PIT Nov 2007		LBA19-20
M361   repaired   ch1 TRACO TMV2415S  unknown repair date	LBA21-22
M394   repaired   ch2 TRACO TMV2415S  31.8.2007			LBA25-26
M447   repaired   TRACO TMV2415S OK   31.8.2007			LBA31-32
M339   OK							?
M340   OK							LBA01-02
M341   OK							LBC03-04
M342   OK							EBA19-20
M343   Ok							LBA23-24
M345   OK							LBA27-28
M346   OK							LBA29-30
M380   OK							LBA17-18
M381   OK							LBA03-04
M382   Ok							LBA05-06
M383   OK							LBA07-08
M384   Ok							LBA09-10
M385   Ok							LBA11-12
M386   Ok							LBA13-14
M387   OK							LBA15-16
M442   Ok      preventive change of TMV2415S   09.04.2008	LBC05-06
M392   error   need change HV IRFU420 ch2,no Switch 830/950V still LBC53-54

Problematic DC/DC converters TRACO TMV2415S (series 0028) that are failing In/Out isolation.

The TMV2415S dc/dc converter changed already in ~7 HV units.

07-18 April 2008, planned addition of protection fuses on each HV channel.