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Problem for Zenith R60V26 60 in. Rear Projection Television

Convergence still bad after replacing IC's

By Rob2008Owen on Feb 28, 2008

" "

I replaced the two IC chips but picture is even worse than before

How do I set the color markings or reset? (Red, Blue)

Comments:

Mar 01, 2008

- My model is a Zenith R60V26

I checked resistors and found none bad on convergence board. Did not see any cracked solder joints.

The fuses I did not check, which one's?

IC's I used to replace were Sanyo stk394-250
Originals were STK392-110's

Red convergence was way off originally now both are and will not
move points in EZ focus (9)
Could be crappy generics, bought from Blue-star.

All ideas are greatly appreciated!!!! Will try comments posted and update as soon as I can but might not be for another week,

Thankz everybody.

Mar 01, 2008

- If any one has a service model, that would be very helpful.
Zenith R60V26 HDTV w/composite cable inputs
I have a good background in Electronics as I graduated from a Technical school in Telecommunications and limited energy systems, so I can troubleshoot fairly well when I know what to be looking for. The forums I reviewed seemed to point to convergence IC amps as the sure deal and blown resistors. I'm open to any possibilities. The set was made in 2002, my 36" has outperformed it already, but this one I inherited from my dad and I want it to last till I can get hold of a flat panel, that means till my wife let's me.

Mar 01, 2008

- Techman, I got info from TV repair discussion posting on-line

Mar 01, 2008

- Where do I find good one's ? (IC's)

Mar 01, 2008

- http://www.hdtvoice.com/voice/printthread.php?t=28929&page=19&pp=20

Here's where I got info for IC's

Mar 03, 2008

- I was unaware that they were truly that expensive for 1st Quality.

I went price searching and found one at 29.99 at Ebay but thought they were just overpricing. Others I found were no more than $10.00

Is that how you find the real ones is expecting to pay no less than $35.00 a chip? Electronix was selling a 2 chip and all the resistors kit for $40.00 I'm getting confused already as who to trust with legit and guaranteed parts! (stk394-250)

Thankz again for all solutions, If I need no less than $100.00 to get this rolling It may be awhile till I can post a success. The forums I read made it sound to cheap, it was my first internet fix research so-to-speak.

Mar 04, 2008

- Thanks techman and Terryiffic for two sites that look way legit, now why the big price difference? Andrews Electronics wants no less than $35.00 a chip. The other you can buy two for $24.00 and they guarantee them to be 100% original, not china-made...
I think I'll go after Techman's link option as I'm trying to make this as inexpensive as possible. It's just a project I will not come and hunt you down if these ideas fail. TV's I see can have a handful of problems which may or may not be specific related. Trust me I know I'm in a similar field of work.
What about the idea of buying a complete convergence board, what is that price tag?

Thanks again for you're excellent support and advice! Will keep post updated

Mar 19, 2008

- Okay I replaced the two IC's with Sanyo original's from Techman's site listing electronic-repair kits.com.

And my TV is back to 100% great picture! No convergence issues whatsoever. If you replace do spend the time to get the correct technique and solution. When I replaced with wrong chips I could of done more harm than good. I really only worked on this because of my Technical background (computers, networks, and electronics)
and because it was given to me, so I had nothing to lose.

Thanks for all the info. RSO

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Clarification Request

Posted by Terryfic on Mar 01, 2008

Techman's questions need answers........

Yoke connections and vertical IC irrelevant at this time......

Best Solution

posted on Mar 02, 2008

Terryfic

Rank: Guru Televisions & Videos

Expert
Rating: 87%, 1730 votes

Replace IC's with ZENITH part number for STK392-110 or
with TOSHIBA or NAP or PANASONIC or any OEM first quality IC ! I use HITACHI part # CZ 01341 which is an upgrade
approved sub for STK392-110,-120,-150......It's GENERIC # is
STK394-160E MFR by SANYO......NOTE: GENERIC IC's are
a complete waste of time no matter what the "price savings"..
Techman and I have written these type of solutions repeatedly
and the bottom line should be DIY to save labor, but DO NOT
use generically labeled IC's unless you are POSITIVE they are
FIRST quality.Hope this info helps many in the future......T.

Comments:

Mar 02, 2008

- Tomorrow I can give you a list of options.......#1 supplier of
OEM parts for me is Andrews Electronics......T.

Mar 04, 2008

- My 30 years in repair business says = best,first quality part
by the Original Equipment Manufacturer ( OEM ) will have their
# on it.....Example = CZ 01341 is Hitachi first quality STK394-160E......23135090 is Toshiba first quality STK392-110T......So,
if you buy the GENERIC number Stk39x-xxx from ANY PARTS
Supplier,they will guarantee them good,new IC's with the specs
sufficent for some applications,but not all. It is the MFR who
sets the level of part quality,not the part supplier.Note: KIT parts
are sometimes lower quality to get the cost down.......Also,
parts are made ww now,China, Thailand,Korea,etc....best have
MFR # on the bag....Less than best......generic.Therefore,
the issue is not where a part is made as much as it is really a cheaper reject of MFR specs of tv you are trying to fix......T.

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Solution #2

posted on Feb 29, 2008

techman

Rank: Guru Zenith

Expert
Rating: 86%, 7687 votes

What type, brand or model number is the TV set you have there? Your question has no information in it.. It could be many things with different types of sets. Have you checked for blow resistors around the IC's? Did you purchase good original IC's or inexpensive aftermarket types? Have you checked the plus and the minus power supply fuses or circuit protectors that feed the B+ to the IC's? Way to many things could still be bad without the right information given.

Comments:

Mar 01, 2008

- You used the wrong IC's I'm afraid. Replace the IC;s with the original ones. Who told you those IC's would work?

Mar 03, 2008

- I get my IC's from Here http://www.electronic-repair-kits.com/index.html

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Solution #3

posted on Feb 29, 2008

who BoB

Rank: Wiz Televisions & Videos

Expert
Rating: 82%, 64 votes

Hi, First I would check to see if you have put the correct yoke connection that goes to the defflection coil of the picture tube's.
Next I would make shure your voltages supply to the convergence it's or there +/- about 25volt , this could have burt the fuse or resistore in the power supply.
Next cheap china ic's can't depend on them hope you have install japan, origenal ic's. I've seen bad ic's and totaly wasted my time just to save $1 or Two.
Next if you give your model, I would have a better clue what section mite have cause it, could be vertical ic's not enough info and a picture would be nice.

Regards

What About Bob

Comments:

Mar 01, 2008

- Hi , I don't think both ic's or replacable, I think this is were you went wrong. I'm still looking on sanyo web site to see what the pin's or, Meanwhile you may have cause more problem,
My email address is rlandry@vianet.ca

Regards
What About Bob

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Solution #4

posted on Mar 01, 2008

tvpaul

Rank: Guru Televisions & Videos

Expert
Rating: 86%, 62 votes

Brand and mod # please

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