Help For Sony Kd53hs30 ?

**shar4557** · **10-22-07, 12:54 PM**

I have a sony kd53hs30 rptv that just lost contro of the converage. I have read some, and some are saying that it could be the converage ic that is screw. Do's this sony set use the sanyo IC too and are they easy to remove ? I thinking of fixing this myself and will also get a price from the local repair shop.
Thanks to all that can help here.
satl input, dvd input and same on all input.

**lcaillo** · **10-22-07, 10:27 PM**

I assume you mean you have a convergence problem. Read the thread on converence problems very carefully then post follow up questions here.

**lcaillo** · **10-22-07, 10:39 PM**

Assuming you meant KP53HS30, as the model number you gave is not valid in my listings for US models, the set uses two STK392-560 output ICs. These sets have had some bad solder joints and connections between boards that cause convergence problems so you might check that before replacing parts.

**shar4557** · **10-22-07, 10:53 PM**

I have read the section on convergence problems and I do think that the convergence chip must need to be replaced. I'm getting scan lines going left to right side, at the top 1/3 of the screen. The green is way off of the other colors. This weekend I will take it apart and look for any thing that not the norm,see if any thing is fried.
Any help would be appreciated....... thanks for the reply lcaillo.... and you are right about the model,it is the sony KP53HS30,sorry about that.....

**tonyvdb** · **10-23-07, 09:28 AM**

I have that exact model and so far its been perfect but as far as repair there is a guy in our area who knows that set inside and out He has a website and is a certified ISF calibrator. Info here you can contact him and see if he has any ideas.
I can tell you that each gun has its own IC chip so if all the colors are out of whack it may not be the IC chip that is bad. I take it that just doing a flash focus wont help? Have you been in the service menu and tried to do a manual convergence?

**shar4557** · **10-23-07, 12:37 PM**

I have tried the flash focus and it will move the 3 guns to the center,but has it finishs doing they defocus . What would cause the wavy lines at the top 1/3 of the screen,they are going left to right. Where would one get a service manual ?
thanks for the help .

**tonyvdb** · **10-23-07, 12:54 PM**

Service manuals are hard to get, if you dont know how to do the manual convergence I dont recommend doing it as you can make matters worse.
I would open up the back of the RPTV Check all the connections and make sure that they are seated properly. REMEMBER, Make sure you UNPLUG THE POWER and be careful as there will still be residual high voltage in some of the caps and other areas wear leather gloves to help prevent this.

**shar4557** · **10-23-07, 05:24 PM**

I own a old nec projecter and doing convergence is not a problem. So the first step would be to check all the connection between the boards ?

**lcaillo** · **10-23-07, 07:07 PM**

The connectors to the convergence yokes sometimes have bad solder joints, the connections between boards can be intermittent, and the output ICs themselves can have bad solder joints. Post a detailed description of the symptoms. Pix are very helpful.

**shar4557** · **10-23-07, 11:27 PM**

Thanks for all your ideas, I will start on friday and re move the back cover and check all the connectons between the main boards. Will check around the convergence yokes. I will try to get a picture of what it looks like and try to post it here, I've never done this either. Will post back soon......
One other thing ,do I need to remove the boards from the set or is it possible to do every thing in place ? If I need to remove boards, which ones and how ?

**lcaillo** · **10-24-07, 05:05 AM**

The boards usually need to be removed in most Sony sets to do very much. Be very careful. I cannot give you every detail about how to look for problems and avoid creating new ones. Handle the boards and wiring very carefully, noting exactly how wires are placed, as changing where they are routed can affect convergence. Be careful not to damage the boards, connections, and wires. There may be some capacitors that hold a charge. If you feel that you are not sure what you are doing you should leave the job to a professional.

**shar4557** · **10-24-07, 10:16 AM**

Thanks Icaillo..... I will try every thing that you have stated, I don't thing I should have any problems removing the boards, but any little advise on what to look for is really helpful. I will try to post a picture before I start on friday, work sort of gets in the way until friday.

**shar4557** · **10-25-07, 04:21 PM**

Ok this morning I removed the back cover,after cleaning every thing ,I check all the connections going to all 3 guns, between the 2 main boards. I then plug tv back in and hooked up to dvd input and put on home theater tune-up disc. When I first powered up with the disc playing, every thing looked normal and within 1 min of running the green started to drift. I've attached a picture of what it looks like after been on for 20 mins.

**lcaillo** · **10-25-07, 04:42 PM**

Check the solder connections and/or replace the output ICs.

**shar4557** · **10-25-07, 04:56 PM**

Does each gun have a seperate output IC ? If not which IC is causing the problem, and where is it located ? Or are you talking of the STK392-560 ?

**lcaillo** · **10-25-07, 07:21 PM**

There are two output ICs that each have 3 channels. Most people change both. You can determine which one by looking at the symptom and which CRT and which direction is affected. The connectors are labled on most of the Sony boards. You can trace back to the chips to see which one is bad.

**shar4557** · **10-25-07, 07:32 PM**

So I can just trace the wires back from the neck board to the output IC's and replace both.

**lcaillo** · **10-25-07, 08:40 PM**

The convergence ICs are easy to find. They are the largest chips in the unit on the largest heat sinks.

**shar4557** · **10-26-07, 07:16 PM**

Can I remove the connector to the green,at the board beside the IC and check for voltage ? If so what should it be ?
Or should I just resolder the IC, and see what happens ?

**lcaillo** · **10-28-07, 04:05 PM**

Do not remove the output connectors with the set running. YOu can blow resistors if the load of the yokes is not present. There is little need to check voltages at this level. If you are going to check voltages you need to remove the output ICs and the voltages you need to check are the dc levels to the inputs of each channel, which should be no more than a couple hundred millivolts. You also need to check that the supply voltages are present. None of this requires removing the output connections.

**shar4557** · **11-02-07, 01:31 PM**

The board is almost completely removed ,except for 2 red wires coming from coil in the upper left hand corner. How do I remove these wires or do I need to follow wires to other end and remove there ? It looks like same type of connection there too ?

**lcaillo** · **11-02-07, 08:12 PM**

The larger red wire is the second anode and goes up to the anode splitter, which is where it should be removed. These can be tricky and you should be very careful not to damage these critical wires. YOu should be able to stand the board up to work on it without removing them. If you must, they are removed by pulling the rubber boot back, then pushing the wire in a bit and turning about 90 degrees. It should then come out, but often does not without trying several times. Be very cafreful not to damaged these, and when putting them back the must snap in and be firmly in place. If you have any doubts leave this to a professional. You risk damage to your set and yourself if these wires are loose, as they carry about 30,000 volts.

**shar4557** · **11-10-07, 06:11 PM**

I have now replaced the 2 IC and the set is working without any of the problems that I had before. Now I have a new problem with the green, it is intermention[ comes and goes] every few minutes. The green will not stay converaged with the other colours. After a minute or so, it will again be back in line and the picture looks great,wait another minute and again it will lose convergence and look way out of focus. Where do I look next to fix this problem ?

**lcaillo** · **11-11-07, 05:53 PM**

Bad solder connections or connectors that are not inserted fully.

**shar4557** · **11-12-07, 02:43 PM**

I first went in and recheck all the connectors and plug unit back in and powered on. There was no difference at all. Next resoldered all the pins on both IC and turned set on and now every thing is working great,no drifting of the green or any other colour. Must have had some bad solder connections some where. THANKS FOR ALL YOUR HELP....ICAILLO.... Now I need to fine tune the convergence,the colours are off alittle bit. Any info on getting into the service menu ? One other question,those IC do run pretty hot, thinking about putting a fan, where can I tap in at ?

Again thanks for the help !!!!

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