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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Panasonic CT32SX31 power supply
I have a panasonic in for repair. You have to push the power button
several times in order the get the relay to click. When it does I hear a high pitch from the power supply and then nothing. I get no HV from the flyback even for a second I hooked up my HV probe and get no action at all.. It acts like shut down but I do not think so. I did find an open 10 ohm resistor near the flyback but didn't make a difference. I'm waitng for a schematic but haven't got one yet..Any help on this? Thanks |
#2
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Panasonic CT32SX31 power supply
Check for shorted Horizontal Output Q551. Is probably is!
That open 10 ohm resistor is a sure sign of a classic PC failure for that model. See these tips and I will also send you the schematic via www.yousendit.com Look for an email from them with a link to download. --------------------------------------------------------------- Text pasted from WinSTIPS 2.0 http://www.ServiceSoftware.com --------------------------------------------------------------- PANASONIC CT32SX31E Pincushion Problem Telrad Electronics Is This Case C757, 6800pf/50v, P/N Ecqb1h682jm3 Was Shorted, About 1.2 Ohms And R517 Was Open, 10k 1 Watt, Looks Like A 1/2 Watt But Is A 1 Watt. P/N Erg1sj103p. R517 Is In The Abl Circuit Off Flyback Pin 3 And C757 Is Also In The Abl Circuit Off Flyback Pin 3 But Is In The Pincushion Circuit Near Ic750. --------------------------------------------------------------- PANASONIC CT32SX31E Pincushion Problem Austin Tv & Electronics Check C524 (.22) R517 (10k) Q702 (A1309) And R246 (1k Chip Cap) Q702 Located Next To The Microprocessor On A Different Board. It Was The Only 700 Number On That Board. --------------------------------------------------------------- PANASONIC CT32SX31E Pincushion Problem Check C757 --------------------------------------------------------------- PANASONIC CT32SX31E Pincushion Problems Garris Tv - New Bern, Nc. Check C524, R517 (10k 1watt), Q702, C757 And R246. Q702 Located Next To The Microprocessor On A Different Board. It Was The Only 700 Number On That Board. --------------------------------------------------------------- PANASONIC CT32SX31E Pincushion Problems 2 Ic750, C524, R517, Q751 All Defective --------------------------------------------------------------- PANASONIC CT32SX31E Shorted H.O.T, After 1 Min Pix Bowed On Sides Bryn Mawr Tv Shorted Q551 (2sc5517000lk) After Replacement Set Turned On With Full Raster. After 1 Min Sides Bowed Inward. Found Shorted C557 (Ecqm1h6825v) Ic750 (Njm4565l Sub Ba15218n) Open R517 (Erg1sj103p/ 10k 2watt) All Parts Are Off Abl Line Replaced Fly As Precaution (Kft5aa369f) Also Check C724, C755, D509, Q701, Q702, L551, L553 --------------------------------------------------------------- -- ========================== Jeff Stielau Shoreline Electronics Repair 344 East Main Street Clinton,CT 06413 860-399-1861 860-664-3535 (fax) ======================== "Johnace" wrote in message oups.com... I have a panasonic in for repair. You have to push the power button several times in order the get the relay to click. When it does I hear a high pitch from the power supply and then nothing. I get no HV from the flyback even for a second I hooked up my HV probe and get no action at all.. It acts like shut down but I do not think so. I did find an open 10 ohm resistor near the flyback but didn't make a difference. I'm waitng for a schematic but haven't got one yet..Any help on this? Thanks |
#3
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Panasonic CT32SX31 power supply
Replace HOT
Replace 10ohm Replace the Pin Transistor Replace the Flyback. Replace the RH3F diode if there is one to left of flyback. Then you are good to go... Just done a 35 for the same thing..Maybe your is the same..Maybe kip "Johnace" wrote in message oups.com... I have a panasonic in for repair. You have to push the power button several times in order the get the relay to click. When it does I hear a high pitch from the power supply and then nothing. I get no HV from the flyback even for a second I hooked up my HV probe and get no action at all.. It acts like shut down but I do not think so. I did find an open 10 ohm resistor near the flyback but didn't make a difference. I'm waitng for a schematic but haven't got one yet..Any help on this? Thanks |
#4
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Panasonic CT32SX31 power supply
Thanks to all that responded.. I'll check them tomorrow.
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