[TechAssist] Re: Sony KP-53HS30 Projection TV

  • From: "electronicrepair" <electronicrepair@xxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Tue, 18 Nov 2003 23:26:23 -0500

Jeff,
There are no LEDs flashing on this set.
Thanks, Mark
Electronic Repair Services
48 W. James st.
Lancaster, PA
----- Original Message ----- 
From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 18, 2003 5:54 PM
Subject: [TechAssist] Re: Sony KP-53HS30 Projection TV


> Mark,
> The front Led should flash a sequence...take note of how many flashes
between pauses...
> Here's two the I have from Tech Repair CD:
> Sony\KP53HS10\Front LED flashes 7 times * has sound no HV.\Green CRT has
G1 short\\\CRT was the only
> problem\\\\\\\\
>
> Sony\KP53HS20\Dead..LED flashes 6 times\\\\The 6 blinks indicates the loss
of 5 volts on the emitter of
> Q714 on the A Board. This 5 volts is supplied from the 5 volt regulator IC
2 (A Board) which receives 6
> volts\from the G Board. If the 6 volts is missing or a short on the 5 volt
line you  will receive 6
> blinks. The 5 volts is also supplied to the B board.\Therefore before
changing boards  check if 6 volts is
> present at CN 4 /pin 3. 5v to CN12 /pin 17 to AD Board* and is 5v at CN
13/pin A23 A Board\So you can see
> the 5v is  supplied to the A* AD* & B board and is created by 6 volts off
of the G board.\ You might want
> to un plug the connectors CN13 & CN12 (A Board) and test for short circuit
with your ohm meter on either
> the A* AD* or B board.\\\\
>
> I also have some information on my websites regarding these:
> www.intrepid-video.com/techhelp.htm
> www.intrepid-video.com/technician.htm
> Good luck.
>
> Jeff Dougherty
> Intrepid Video TV/VCR
> 263 S Front St
> Steelton PA 17113
> fax...717-564-4952
> www.intrepid-video.com www.tech-repair.net
>
> ----- Original Message -----
> From: "electronicrepair" <electronicrepair@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, November 18, 2003 9:10 AM
> Subject: [TechAssist] Sony KP-53HS30 Projection TV
>
>
> I picked up this TV and the costumer had told me that it was hit by
> lightning.
> I plugged it in and will not turn on, the only voltage I get from the P.S.
> is 5v, I checked
> all the transistors and diodes for shorts and they are OK, I also checked
> all the resistors
> and VDRs they also check OK, in the power supply.
> I am fairly new in the projection servicing field, I do not have a
schematic
> on the set
> and I would appreciate all the help and hints that you can provide me
about
> this TV in
> particular and any other general help on projection TVs.
> Thank you, Mark
> Electronic Repair Services
> 48 W. James St.
> Lancaster, PA 17603
>
>
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