[TechAssist] Re: 1990 Hitachi PTV model CU4601
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 17 Jun 2005 15:15:30 -0400
You just divided the video circuit in half... divide and conquer!
3-comb video circuit!
Phil
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
peggs wrote:
>S-Video(takes the place of Video 1)
>IS fine.
>The RCA Inputs,and the Antenna inputs have the Video 'distortion'.
>I'm downloading the manual now from HitachiService.
>
>Peggs
>
>At 07:36 AM 6/17/05, Phil Bader wrote:
>
>
>>Then it does have a 3-comb filter... The S-video in the only input on
>>that that bypasses the filter circuitry. If clear in S video, you
>>narrowed it down to most likely the video 3 comb filter.(caps)
>>Phil
>>
>>Philip Bader
>>Jan Phyl TV Inc. (estab. 1976)
>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>Fax (863) 299-8821
>>email: tjanphyl@xxxxxxxxxxxxxxx
>>
>>
>>
>>peggs wrote:
>>
>>
>>
>>>It does.....thanks.......I'll check that input a little later this morning
>>>
>>>Peggs
>>>
>>>At 02:32 PM 6/16/05, Phil Bader wrote:
>>>
>>>
>>>
>>>
>>>>I assume this does not use an S-video input?
>>>>Phil
>>>>
>>>>Philip Bader
>>>>Jan Phyl TV Inc. (estab. 1976)
>>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>>Fax (863) 299-8821
>>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>>
>>>>
>>>>
>>>>peggs wrote:
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>You're talking about the 3 line comb filter.I've done a few of those.
>>>>>This set is different.
>>>>>
>>>>>All the Audio Video even some deflection processing is on the same PCB.
>>>>>Mounted upright on the left side of the cabinet(from the rear).
>>>>>
>>>>>Peggs
>>>>>
>>>>>
>>>>>
>>>>>At 01:51 PM 6/16/05, BOSS1996@xxxxxxx wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>>Peggs, I just looked at the same set I have here at the store,
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>just repaired
>>>>
>>>>
>>>>
>>>>
>>>>>>it for what you describe. I may have the name of the module wrong
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>but it is
>>>>
>>>>
>>>>
>>>>
>>>>>>definitely in the set. Take another look.
>>>>>>
>>>>>>Bob
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>In a message dated 6/16/2005 4:48:25 PM Eastern Daylight Time,
>>>>>>peggs@xxxxxxxxxxxxx writes:
>>>>>>no,this set is much older than the Comb filter sets
>>>>>>ty
>>>>>>
>>>>>>Peggs
>>>>>>
>>>>>>At 01:30 PM 6/16/05, BOSS1996@xxxxxxx wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>>Look for a module soldered to the main board, think it is called a YC
>>>>>>>separator, is has lots of surface mount caps inside, change them
>>>>>>>
>>>>>>>
>>all for
>>
>>
>>>>>>>convenience since it is hard to service the module in the set.
>>>>>>>
>>>>>>>Robert Cardoza
>>>>>>>Picture Perfect Elec.
>>>>>>>9940 NW 6th Ct
>>>>>>>Pembroke Pines, Fla, 33024
>>>>>>>954-435-5868
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>In a message dated 6/16/2005 4:24:48 PM Eastern Daylight Time,
>>>>>>>peggs@xxxxxxxxxxxxx writes:
>>>>>>>
>>>>>>>This unit has some type of video 'interference' problem.
>>>>>>>Both on tuner and the AV inputs.It's hard to describe.
>>>>>>>Similar to a slight AGC overload problem.
>>>>>>>I've replaced numerous 'leaky' caps on this AV/Video/Chroma board.
>>>>>>>They are on other boards in here as well.Most of these
>>>>>>>bad caps are Blue,100uF @ 16v.
>>>>>>>Heat and chill doesn't help isolate the culprit(s).
>>>>>>>Any tips on an old hitachi model CU4601K ???
>>>>>>>
>>>>>>>Hitachi website didn't offer much help......
>>>>>>>
>>>>>>>Peggs
>>>>>>>Peggs' Electronics
>>>>>>>1519 West 2nd Street
>>>>>>>Owensboro,KY 42301
>>>>>>>270-926-4968
>>>>>>>fax 270-686-7399
>>>>>>>peggs@xxxxxxxxxxxxx
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>------------------------------------------------------------------------
>>>>>>
>>>>>>
>>>>>>
>>>>>>
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