Pioneer SD-P5047 RPTV issue

[mbates14]

Got one of these that will power up and shut right back down. resoldered the entire powersupply/deflection board as the solderjoints in areas were pretty bad.

Still does the same thing, If i remove the connector E5 which supplies the H-Drive to the board, the TV will stay on, just no picture of course. soon as reconnected, it shuts down. all of the transistors and diodes check fine, also along with all the fuses.

Service manual doesnt give me a part number to locate the flyback transformer, any ideas?

[cadiman]

Re: Pioneer SD-P5047 RPTV issue

if you unplug a board from the power supply then what your saying is the power supply stays on?

[mbates14]

Re: Pioneer SD-P5047 RPTV issue

yes. I figured out it is the flyback. if i remove the B+ to the flyback supply, the TV will power on and stay on with full vertical and horizontal. just no HV. So i need to locate a flyback. and unfortunately, am unable to.

[markchess1960]

Re: Pioneer SD-P5047 RPTV issue

Origonal pioneer part number is ATK1048 which shows no longer available.
Encompass (www.encompassparts.com) shows a replacement which is ATK1057 and sells for $140.95 if you don't have an account with them and abut $20.00 less if you do.
Did you solder up both horizontal driver transformers?

[mbates14]

Re: Pioneer SD-P5047 RPTV issue

Origonal pioneer part number is ATK1048 which shows no longer available.
Encompass (www.encompassparts.com) shows a replacement which is ATK1057 and sells for $140.95 if you don't have an account with them and abut $20.00 less if you do.
Did you solder up both horizontal driver transformers?

ouch... yea.. the customer didn't like that idea. so off another cabinet-style beauty goes to the landfill. its a shame.