[TechAssist] Re: Philips PL 4125 -C101 Ch 25N-501
- From: Paul <dntwntv@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 17 Mar 2004 16:29:14 -0800 (PST)
Jim It does have C432 100mfd@200v . The 130v is the operating B+ and that
stays the same unless you reduce the A/C. The set will function normally at
about 85v A/C. If it was over 130v then I might question the regulator. Dave
Houston of Houston Electronics sent what I think is the answer from Force 32
manual. It says that the symptom that I described can be caused by I/C 530. It
is called the" hew shutdown" which is the HV protect circuit. I did not
recognize it as such. If you haven't deleted that post you might want to check
it in posts of 3/16. Most informative. I have part on order. Paul
Jim Myers <jr.myers@xxxxxxxxxxx> wrote:Reading between the lines.....if you
reduce the B+ from 130V to 115V pix
is stable..........hum...........I think you have a regulation problem
instead of a horz sync problem. The 130V should not change much as you
change the line voltage if that is how you are reducing the B+. This
sounds like the infamous C432 problem, does the N chassis have it?
*******************************************************************************************************************
Since 1972
Jim Myers
Telrad Electronics
Fort Wayne, Indiana
Tel-Tek wrote:
> Checked my databases, have nothing for Horizontal sync on those. Sorry.
>
> -Ed-
> Tel-Tek Electronics
> Ontario-Canada
> teltek3@xxxxxxxxxxxx
> ----- Original Message -----
> From: "Paul"
> To:
> Sent: Tuesday, March 16, 2004 8:06 PM
> Subject: [TechAssist] Re: Philips PL 4125 -C101 Ch 25N-501
>
>
>
>>Horiz sync is off freq. picture slanted then goes to blue. Has to do with
>
> X-Ray protect I would guess. The problem does not appear to be in the Horiz.
> section.
>
>>Tel-Tek wrote:Need a better description of
>
> "Horizontal Problem".
>
>>-Ed-
>>Tel-Tek Electronics
>>Ontario-Canada
>>teltek3@xxxxxxxxxxxx
>>----- Original Message -----
>>From: "Paul"
>>To:
>>Sent: Tuesday, March 16, 2004 7:43 PM
>>Subject: [TechAssist] Philips PL 4125 -C101 Ch 25N-501
>>
>>
>>
>>>Set has horiz. sync problem. Have changed I/C 207, Y250 the osc
>>
>>crystal,the reg. I/C 410,C 505 & C 506. Have checked esr on caps. If I
>>reduce the B+ from normal 130v to 115v, picture is stable. What else can
>>cause this problem? Paul
>>
>>>Paul ,B
>>
>>Central TV&Video
>>Grover Beach Ca.
>>
>>>
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>>Paul ,B
>
> Central TV&Video
> Grover Beach Ca.
>
>>
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Paul ,B
Central TV&Video
Grover Beach Ca.
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