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Gravityboots
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 Posted: Mon Jan 07, 2008 5:11 pm Post subject: Sony KP-43HT20 (RA-6) Chassis |
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| Convergence all out of whack. Anyone have a service manual or a clue as to wear to begin? 19 year TV vet needs help! |
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Justmanuals
Joined: 21 Aug 2004
Posts: 1948
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Mon Jan 07, 2008 8:57 pm Post subject: |
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| Replace your convergence IC's should be STK392-560"s and look for open pico fuses. |
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Gravityboots
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| Posted: Mon Jan 07, 2008 10:10 pm Post subject: Thank you |
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| Thank you minnie, I'll give it a go. |
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Gravityboots
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| Posted: Mon Jan 07, 2008 10:51 pm Post subject: Confirmation |
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minnie,
I just confirmed (2) 5amp pico fuses were blown in the power supply and believe your advice is right on the money. The owner of this set is a personal friend of mine and will be most greatful for the advice. The ICs are actually STK-570's however and all pico fuses mounted below these ICs checked good. |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Mon Jan 07, 2008 11:46 pm Post subject: |
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| That's normal, replace the STK's and pico's and you'll be fine. |
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Gravityboots
Joined: 09 Jan 2008
Posts: 38
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| Posted: Thu Jan 10, 2008 3:55 am Post subject: Fixed |
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minnie,
This cured the problem and thanks again for helping a guy out! |
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Gravityboots
Joined: 09 Jan 2008
Posts: 38
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| Posted: Sat Jan 12, 2008 12:10 am Post subject: Red Tube is shot |
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follow up minnie:
The cure you suggested was on the money except for my set has a bad red tube and continually blows my right STK. Turn set on, heats up after 2 minutes, smokes rolls out of the IC.
Darn tubes! |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Sat Jan 12, 2008 12:31 am Post subject: |
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| How do you know it's the tube? |
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Gravityboots
Joined: 09 Jan 2008
Posts: 38
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| Posted: Sat Jan 12, 2008 3:20 am Post subject: I know it's the tube because |
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| The other two tubes are three times brighter and I've been through all the circuitry. Circuitry is fine. The right IC carries both the Red and Green tubes and that's the only one smoking. |
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