[TechAssist] Re: fix: Re: RCA Colortrak projo model PPR475T (chassis?)sound, no pix
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 08 Apr 2004 17:29:51 -0400
Correction: Fuse should be F904,(not R904)and was a 1.5A (1500ma)GMA.
Phil
Phil Bader wrote:
>Thanks to Al's pdf files, i located an open fuse on the PS module. R904,
>1.5 amp GMA. I tested all around this fuse circuit,Q902 regulator it
>feeds,etc. All good.
>This was in the +127 VDC source to connector GB pin 3. It goes on the
>the HOT/fly ckt. Seems just material fatigue. I used a 1.8 amp. Also the
>convergence module needed all the transistors resoldered (tapping on
>this caused the convergence to go crazey).
>I resoldered a lot of the deflection board.
>Nicotine was thick on all the optics. Inside of screen was brown. Lots
>of cleaning.
>Actually looks 100% better than it could have for years.
>Thanks.
>Phil Bader
>
>al m wrote:
>
>
>
>>Phil there is a fuse F701 going to Pin 9.you are checking the high voltage
>>drive circuit. Will send scan
>>Al Marquardt
>>ampm@xxxxxxx
>>Al Marquardt Electronic Repair
>>206 W Main
>>Girardville Pa. 17935
>>----- Original Message -----
>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Wednesday, April 07, 2004 12:47 PM
>>Subject: [TechAssist] Re: RCA Colortrak projo model PPR475T (chassis?)
>>sound, no pix
>>
>>
>>
>>
>>
>>
>>>I can power it on with sound, recieves cable, stereo led indicates
>>>stereo signal. No HV.
>>>A few checks:
>>>H. driver transistor Q703 has +124 VDC collector.
>>>HOT (?) Q704 no B+ at collector. Is NOT shorted, has diode action with
>>>meter.
>>>Large cap C904 has +122VDC.
>>>Flyback pin 9 "B+" has no voltage on it.
>>>Connector GB pin 3 has zero volts. (seems to be a B+ piont)
>>>BTW this seems the same as the PPP400 and PPR500 models. All Hitachi
>>>VP6X chassis.
>>>Any notes ?
>>>Thanks,
>>>All for now.
>>>Phil Bader
>>>
>>>al m wrote:
>>>
>>>
>>>
>>>
>>>
>>>>Phil I've got a VP6X manual on paper. What do you need?
>>>>Al Marquardt
>>>>ampm@xxxxxxx
>>>>Al Marquardt Electronic Repair
>>>>206 W Main
>>>>Girardville Pa. 17935
>>>>----- Original Message -----
>>>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>>>To: <techassist@xxxxxxxxxxxxx>
>>>>Sent: Wednesday, April 07, 2004 12:17 PM
>>>>Subject: [TechAssist] Re: RCA Colortrak projo model PPR475T (chassis?)
>>>>sound, no pix
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>Internally, it has a ID tag:
>>>>>Hitachi VP6X chassis.
>>>>>Phil Bader
>>>>>
>>>>>Phil Bader wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>>This has got to be 15+ yrs old.Wood cabinet. "ColorTrak".
>>>>>>Any one old enough to have histories on this one?
>>>>>>;-)
>>>>>>Phil Bader
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>--
>>>>>
>>>>>Philip Bader
>>>>>Jan Phyl TV Inc. (estab. 1976)
>>>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>>>Fax (863) 299-8821
>>>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>--------------------------------------------------------------------------
>>>>
>>>>
>>>>
>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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>>>>
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>>>--
>>>
>>>Philip Bader
>>>Jan Phyl TV Inc. (estab. 1976)
>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>Fax (863) 299-8821
>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>
>>>
>>>
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--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
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