CurtPalme.com Home Theater Forum

**AnalogRocks**

I got a free TV ( again ) and I pluged it in. I get no power, it doesn't even try to power up. The main AC fuse seem's ok. Any idea's where to start?

I'm going to have a look at the power switch now.

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Model Number.........

**AnalogRocks** · Posted: Sat May 10, 2008 9:25 pm Post subject:

**AnalogRocks** · Posted: Sat May 10, 2008 9:39 pm Post subject:

It's hard to say. Maybe you can decipher it.

Possibly KM 29T829??

**AnalogRocks** · Posted: Sat May 10, 2008 9:45 pm Post subject:

One more. Maybe KV 27TS29?

secstate · Joined: 20 Mar 2006 Posts: 720

Does the LED power light flash at all when you try to power it up? The number of flashes, at least on newer sets is an indication of at least where the set feels the problem is. This forum has some good info on repairing Sony direct view and rear projection sets. http://www.agoraquest.com/viewforum.php?forum=34

**AnalogRocks** · Posted: Sat May 10, 2008 10:00 pm Post subject:

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

That would be a KV27TS29. If I remember that chassis correctly it was a common problem of shorted regulator transistors in the power supply. Something like 601 and 602 I think. There was a kit that also had replacement VR's. Sometimes it would take out the horz output xsistor also. I think I have the manual for that but let me check.

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

**AnalogRocks** · Posted: Sat May 10, 2008 11:09 pm Post subject:

LOL yeah. Here's the best part when I walked around to the botom of the set, (it's face down on a pillow and blanket )

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Ok, I'm skimmed over the schematics and I see a couple things first. If it's a Canada model the A/C input board is an FA with a fuse labeled F500. If it's a US model the A/C input is an F board with a fuse labeled F50 or 60 (hard to tell). On the power supply board (D board) there is a fuse labeled F602. Check those. Would you rather me talk you through this or do you want me to PM you a copy of the service manual? Have fun........

**AnalogRocks** · Posted: Sun May 11, 2008 12:16 am Post subject:

Oh please hold my hand Laughing

LOL

I'll let you know in a few how the fuses are.

**AnalogRocks** · Posted: Sun May 11, 2008 1:09 am Post subject:

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

That is the common Sony problem but there are some key info missing there. Those look like the parts that need to be replaced but you also have to check the horiz. output transistor. If the xsistor is good you need to check the solder joints on that xsistor, the horiz drive transformer. Hopefully there will be bad joints. Other wise you may have a bad flyback which you wont know until you replace all the parts and it blows everything out again. Check the horiz xsistor for shorts, check as many solder joints as you can but especially those I suggested, replace the parts on that list and keep you fingers crossed. Then hope you dont have the common Sony weak tube issue............

**AnalogRocks** · Posted: Sun May 11, 2008 1:40 am Post subject:

Thanks Mac,
Can I get a schematic off you then?

**AnalogRocks** · Posted: Sun May 11, 2008 1:47 am Post subject:

Oh yeah, one more thing, how do you get the HV lead out of the flyback?

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

**AnalogRocks** · Posted: Sun May 11, 2008 2:45 am Post subject:

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

I was looking for your email. Thought I had it saved but I can't find it. PM it to me and I'll send it now. To large for PM.

**AnalogRocks** · Posted: Sun May 11, 2008 6:08 pm Post subject:

Schematic recieved. Thanks Mac.