[TechAssist] Re: 2nd post:Pioneer SD-P6091 help
- From: "tony saracco" <tcselectronics@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 15 Apr 2004 07:37:21 -0500
Jorge,
I have seen the vert output cause shutdown, not sure if this model uses the
STK4274 ( mounted on convergence board) as the vert out but its the first
place I would start..
Tony Saracco
TCS ELECTRONICS
406 Andra Ct.
Gilberts, IL 60136
tcselectronics@xxxxxxxxx
----- Original Message -----
From: "Jorge Camboni" <geo@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, April 15, 2004 4:36 AM
Subject: [TechAssist] 2nd post:Pioneer SD-P6091 help
>
> Hi gang. Been working with this Pioneer SD-P6091 at
> the customer's home, the thing did not come on at all.
> I resoldered the whole pwr/deflection board and check
> ALL transistors, including HOT, driver, etc, and all
> caps. Fixed a lot cracked solders, the rest seemed ok.
> After that, the thing tries to come on, red light first,
> green light after, relays clicking and back to red light.
> There is no HV. Leaving HOT's collector floating makes
> no difference. (maybe the set does not come on if
> there is no horizontal output -like many others it
> may use a fbt derived voltage to stay on-)
> I suspect the FBT but i have no means to check it
> at the customer's home (50 miles round trip) and
> I am painfully bad at performing measurements at floor level..
> (the less the better!!)
>
> It might be as well a bad audio output or something shorted
> at the convergence module (I am going to have to check all
> that next time anyway) The FBT # is ATK1103 and
> only Pioneer seems to have it. Same with the service manual,
> both rather expensive, would have to raise the estimate too high..
>
> The customer said that before it went dead, the set used to shrink
> horizontally at random (could be cold solder, could be the fbt...)
>
> If someone is familiar with those sets ( I usally do not put up very well
> with Pioneers) I would appreciate very much any tip, suggestion or
> piece of advice, and any alternate source for service manual
> and ATK1103 FBT
> Thanks in advance
> Jorge
>
>
>
> Jorge Camboni, GY Electronics, Richardson, TX
>
>
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