[TechAssist] Re: Sony KP-53HS30 Projection TV
- From: "Electric Medic" <info@xxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 19 Nov 2003 01:38:51 -0500
Mark, your set probably won't flash the LED with a lightning strike dead.
There are probably many bad parts on that board from my experience with Sony
HS Lightning sets. There is a cap that goes bad sometimes, on the
deflection/power board, it will actually buckle at the top, not sure of
board location, since I am here at home. That will cause your symptoms.
Usually, besides the main fuse bad, when that cap is bad, replacing it will
fix the set. What I do is get the customer to at least approve a
remanufactured board first, thru Sony or tritronics, and my labor, then
troubleshoot it further or send it off. The board should only be around
$250, then you don't have to worry about recalls on weakened components that
don't show up until the set is back home.
Perry Bower, (EHEER) Electronic Home Entertainment Equipment Repairer
Electric Medic
"It's Cheaper to Keep Her"
http://www.electricmedic.com
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-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of electronicrepair
Sent: Tuesday, November 18, 2003 11:26 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Sony KP-53HS30 Projection TV
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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