27" Hitachi tv model:27CX7B,chassis:M3LXU2
 

27" Hitachi stereo tv model:27CX7B,chassis:M3LXU2,year:June 96,PIP
with S-VHS input.3 months ago the customer dropped the tv off for
repair because of no power so I replaced the following parts:

In SMPS:
C918=100 Uf,6.3v
C920=100 Uf,16v
C923=470 Uf,16v

In Horizontal driver section:
C925=1 Uf,160v

In other areas:
C729=470 Uf,25v
C711=470 Uf,35v
C706=470 Uf,16v

In vertical section (as preventative maintenance)
C606=100 Uf,35v
C702=10 Uf,16v
C603=10 Uf,16v
C613=2.2 Uf,50v
C728=330 Uf,6.3v

And now three months later the customer called today and said no power
again,he has not dropped it off yet but I would like to know if anyone
has access to Hitachi repair tips for this model/chassis from all of
those tips repair sites.
Thanks in advance.

Sidney
Dartmouth,Nova Scotia (the land of berries)
Canada

Apperently the tv below is missing the 5v vcc (B+) for the micro and I
have not accessed Hitachi's free service manuals site in several
months so my account became automatically deleted so I reapplied and
it may take several days so in the mean time can someone e-mail me the
schematics dealing with the micro area and power supply?.
Thanks in advance.

Sidney

Dartmouth,Nova Scotia (the land of berries)
Canada

Apperently the tv above is missing the 5v vcc (B+) for the micro after
extensive troubleshooting I noticed that when I take my Fluke DMM
series II model:29's lead and touch pin 8 of IC901=TDA4605-3=Hitachi #
2020392 the tv comes on and works normally but there are times when
the tv will not come on then after I touch pin 8 the tv comes on again
of course after I press the power button.
I replaced the three electrolytics around IC901 but problem is still
there,anyone have any tips to allow me to isolate the problem
more?.Thanks.

Sidney

Dartmouth,Nova Scotia (the land of berries)
Canada