electronics, repairs, service manuals and datasheets discussion community for the repairs professionals and technicians
FAQSearchMembersGroupsRegisterProfilePM'sLogin/Out
Philips 29PT700B/00 CHASIS GR2.4 (HOTs/c on power-up)

 
Post new topic   Reply to topic    Electronic equipment repair and service manual search discussion Forum Index -> Equipment Repairs
View previous topic :: View next topic  
Author Message
andreavanna



Joined: 06 Dec 2006
Posts: 3
Location: Italy
PostPosted: Wed Dec 06, 2006 11:17 pm    Post subject: Philips 29PT700B/00 CHASIS GR2.4 (HOTs/c on power-up) Reply with quote
Hi all,
As soon as I switch on the unit, the HOT shorts out.
I replaced all caps and the LOPT, switched the TV on, had a green light and sound but no picture. I again repalced the HOT but now as soon as I switch the unit "on" the HOT shorts and a bleeping sound follows. Please help.....thanks

Yes all the diodes check "ok" on my Fluke 79.

Last edited by andreavanna on Thu Dec 07, 2006 2:34 pm; edited 1 time in total
Back to top
View user's profile Send private message
Frank
Guest
PostPosted: Thu Dec 07, 2006 12:44 am    Post subject: Reply with quote
Did you check the diodes?
Back to top
Frank
Guest
PostPosted: Thu Dec 07, 2006 12:59 am    Post subject: Reply with quote
It might be the drive transformer also.
Back to top
andreavanna



Joined: 06 Dec 2006
Posts: 3
Location: Italy
PostPosted: Thu Dec 07, 2006 8:35 am    Post subject: Reply with quote
Frank wrote:
Did you check the diodes?


Yes the diodes check "ok" on my Fluke 79
Back to top
View user's profile Send private message
Guest
PostPosted: Thu Dec 28, 2006 8:12 pm    Post subject: Re: Philips 29PT700B/00 CHASIS GR2.4 (HOTs/c on power-up) Reply with quote
andreavanna wrote:
Hi all,
As soon as I switch on the unit, the HOT shorts out.
I replaced all caps and the LOPT, switched the TV on, had a green light and sound but no picture. I again repalced the HOT but now as soon as I switch the unit "on" the HOT shorts and a bleeping sound follows. Please help.....thanks

Yes all the diodes check "ok" on my Fluke 79.


Interesting, it seems like n diode check does NOT mean that the diode is "ok" (under high freq I suppose) in this case diode 6580 BWV28-200 checked ok but the set only fired-up after repalcing this diode. (Solder was "ok" before replacement)
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Electronic equipment repair and service manual search discussion Forum Index -> Equipment Repairs All times are GMT
Page 1 of 1

 
Jump to:  
You can post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


eServiceInfo on FB - Service Manuals Free Download - Service Diagrams

Free TV Schematics Download - HARDW.net - Pinout Master - Jabse Service Manual Search - Jabse.InK  - onTap.bg

SnimkiOt.com - Poblizo.com : пътешествия  

Latest Service Manuals : irgs14c40l International Rectifier • R3265A R3271A Spectrum Analyzer Vol III • SAA7126H 7127H 2 Various • stereo Tuner TS 2000 Saba • XL2 Midas • hfe pioneer sg-300 service add en Pionee • 070-5603-01 4404 Users Manual Dec84 Tekt • KNA-DV3100/DV3200 kenwood • GA7010C-TE MAKITA • e-166 Toshiba •