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I need to program a 27" Zenith Television Model # H27F36DT with a master remote from commercial...
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Problem for Zenith H27F36DT 27" TV
Burning smell
Found capacitor in hv area burned and replaced. I have seen a lot of these in my shop and the result is the same....once the capacitor is replaced the set fires up but tyhere is always a phase problem with the picture and a tear. What else needs replacement?
Same Problem
Mar 28, 2009
- CX3218 (160V, 2.2uF, 85 degrees Celcius) is the obvious blowout (well...the top's domed) and my set just clicks off from a circuit protection element (ZNR?) resetting (the power supply then tries again from the get-go.)Not just capacitors but also series resistance of the downstream transistors can become deranged. Sometimes a resistor to ground can chill out an NPN element, sometimes that's not it; and resistors that can tough out the voltage needed are perhaps as expensive as replacing the transistor, even speculatively (e.g. by socket before committing the part.)
- Saigua
Mar 28, 2009
- CX3218 (160V, 2.2uF, 85 degrees Celcius) is the obvious blowout (well...the top's domed) and my set just clicks off from a circuit protection element (ZNR?) resetting (the power supply then tries again from the get-go.)Not just capacitors but also series resistance of the downstream transistors can become deranged. Sometimes a resistor to ground can chill out an NPN element, sometimes that's not it; and resistors that can tough out the voltage needed are perhaps as expensive as replacing the transistor, even speculatively (e.g. by socket before committing the part.)
- Saigua
Dec 15, 2007
- I have a 36 inch zenith with a burnt up cap in the power supply area. How do I find the caps value so I can replace it with the right one. Thanks for your help!!- HUNTTSolution #1
posted on Apr 04, 2009
Simply replacing CX3218 worked...for 2 hours. It was destroyed shorted and the top domed enough to note.
So: I replaced that with 4 of the same value (a parallel pair of pairs in series, for the same value,) and they still get quite hot, but it lasts longer. More than 2^4 so far.
I'm not relearning Jet Grind Radio very fast, though.
So: I replaced that with 4 of the same value (a parallel pair of pairs in series, for the same value,) and they still get quite hot, but it lasts longer. More than 2^4 so far.
I'm not relearning Jet Grind Radio very fast, though.
Comments:
Apr 05, 2009
- The pic looks good; no tears, maybe visible side edges from less deflection, but they're straight edges in most scene lighting, never far off. Likely either resistors or the horizontal output transistor base stage are falling off spec. If they stop making plasma screens and it has to play The Sundance Channel and IFC rather than Scooby Doo, I'll get in there with a bridge or other ESR meter. Luckily neither the sweep phase circuit nor overall voltages (driven via the horizontal drive, typically primary to the flyback transformer) were disaffected.Yes
No
Solution #2
posted on Apr 12, 2008
Get an ESR meter and check the ESR of all the caps in the horizontal scan area. I don't know the particulars of the model of set, but I would not rule out damage to the flyback, or any of the other components in the drive circuits to the deflection yoke. This type of fault can take some time to troubleshoot and work out.
You can read about capacitor ESR at this site:
http://wiki.xtronics.com/index.php/Capacitors_and_ESR
Jerry G.
You can read about capacitor ESR at this site:
http://wiki.xtronics.com/index.php/Capacitors_and_ESR
Jerry G.
Yes
No
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