[TechAssist] Re: Mitsubishi TV. Model#CS2724C. Distortion in Picture.
- From: peggs <peggs@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx, techassist@xxxxxxxxxxxxx
- Date: Fri, 10 Jan 2003 09:13:16 -0600
From WinStips for different Video problems
1.C232 10/50 dry. Has leaked electrolyte and corroded Q2e5 2sa933. Replace
both. Located left front corner signal board
2.C928 1,000/50 R/W 2,200/50, C4e5 100/35, C516/C2011/C2024/C206 470/16,
C232 10/50, C513 100/35, Because They Are All Starting To Leak
3.AGC overload:Check For Open L107 Located At Pins 22 And 23 Of Ic101.
(Pcb-Signal) L107 Pt.# 323p111020
4.Check For 8.9v At Base Of Q6904 On Crtpcb. If Missing Check For Open
Ic6e2. Pcb-Signal. Part #266p931010
5.Check For Low Voltage On Base And Emitter Of Video Buffer Q2e5. Should Be
3.5 To 4vdc. If Low, Replace Q2e5. Located On Pcb-Signal At Ic202 Pin
7. Pt# 260p560040
6.Picture Has No Detail On Dark Scenes May Be Accompanied By A 'Snowy'
Picture. Check C232 (10uf 50v) Located On Pin 1 Of Ic202.On The Sign Alpcb
7.To Eliminate Pip Daughter Pcb As The Cause, Remove Pip Pcb, And Jump Pins
1 & 7v Of "Vp" Socket With 1u 50v, Will Work Now If Pip Is At
Fault............this was for CS2724R
8.C623 470/10
Peggs
At 09:14 PM 1/9/03 -0500, D Panday wrote:
>
>
>
>No. I check and re-check.. TWICE -
>On the PIP and Main PCB's.
>Panday
>
>
>
>
>>From: peggs <peggs@xxxxxxxxxxxxxx>
>>Reply-To: techassist@xxxxxxxxxxxxx
>>To: techassist@xxxxxxxxxxxxx, techassist@xxxxxxxxxxxxx
>>Subject: [TechAssist] Re: Mitsubishi TV. Model#CS2724C. Distortion in
>>Picture.
>>Date: Thu, 09 Jan 2003 13:15:58 -0600
>>
>>
>>Does it have those caps with 'blackened' leads ???
>>
>>Peggs
>>
>>At 12:08 PM 1/9/03 -0500, D Panday wrote:
>> >
>> >Peggs,
>> >
>> >Thanks for the info., However, I by pass the PIP. Same
>> >polem.
>> >I will have to get a schematic..
>> >It is a Canadian Model to anwser Leonard's post.
>> >Thanks again.
>> >Panday
>> >
>> >
>> >
>> >
>> >
>> >
>> >>From: peggs <peggs@xxxxxxxxxxxxxx>
>> >>Reply-To: techassist@xxxxxxxxxxxxx
>> >>To: techassist@xxxxxxxxxxxxx, techassist@xxxxxxxxxxxxx
>> >>Subject: [TechAssist] Re: Mitsubishi TV. Model#CS2724C. Distortion in
>> >>Picture.
>> >>Date: Wed, 08 Jan 2003 13:42:50 -0600
>> >>
>> >>
>> >>Don't know if it's the 'typical' Mitsu. PIP Module,but
>> >>if it has those little SM caps,heat and chill for a reaction.
>> >>The typical PIP module can be bypassed by removing it,and
>> >>using capacitors to jumper connector VP pins 5&11 and 7&9.
>> >>Use 2.2/50v.
>> >>Otherwise,look for Black capacitors with one lead 'blackened'.
>> >>You can heat and chill these as well for a reaction to the symptom.
>> >>If it has these caps,good luck,cause it probably has a jillion of 'em
>> >>
>> >>Peggs
>> >>
>> >>At 01:51 PM 1/8/03 -0500, D Panday wrote:
>> >> >
>> >> >Yes. There is a PIP module.
>> >> >Panday
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >>From: peggs <peggs@xxxxxxxxxxxxxx>
>> >> >>Reply-To: techassist@xxxxxxxxxxxxx
>> >> >>To: techassist@xxxxxxxxxxxxx, techassist@xxxxxxxxxxxxx
>> >> >>Subject: [TechAssist] Re: Mitsubishi TV. Model#CS2724C. Distortion in
>> >> >>Picture.
>> >> >>Date: Wed, 08 Jan 2003 11:17:46 -0600
>> >> >>
>> >> >>
>> >> >>It's a Mitsubishi,so if it has a PIP module........
>> >> >>
>> >> >>Peggs
>> >> >>
>> >> >>At 11:04 AM 1/8/03 -0500, D Panday wrote:
>> >> >> >
>> >> >> >Hi All,
>> >> >> >
>> >> >> >I have a Mitsubishi TV with Distortion on
>> >> >> >Picture.The distortion is on high contrast area - White smearing.
>> >> >> >If I input an Center Cross pattern, the distortion is on the
>> >> >> >center line (top to bottom). Not noticeable on color bar.
>> >> >> >
>> >> >> >I scope the cathode. Look like the rising time is too slow.
>> >> >> >If I reduce the screen voltage, pix ok but it is too dark.
>> >> >> >
>> >> >> >Any help will be appreciated.
>> >> >> >TIA.
>> >> >> >Panday
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
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>> >> >>Peggs' Electronics
>> >> >>1519 West 2nd Street
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>> >>Peggs' Electronics
>> >>1519 West 2nd Street
>> >>Owensboro,KY 42301
>> >>270-926-4968
>> >>fax 270-686-7399
>> >>------------------------------------------
>> >>Submit A Repair Tip For Everyone Here:
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>>Peggs' Electronics
>>1519 West 2nd Street
>>Owensboro,KY 42301
>>270-926-4968
>>fax 270-686-7399
>>------------------------------------------
>>Submit A Repair Tip For Everyone Here:
>>http://www.tech-assist.org/secure/tip/main.html
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Peggs' Electronics
1519 West 2nd Street
Owensboro,KY 42301
270-926-4968
fax 270-686-7399
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