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CTC 177AG trouble!!

RCA 25" M # 25GT536, chassis # CTC177AG. Unit was dead, replaced STK-730-010 (shorted), R104 1.5 meg ohm (gone high), C4105 10UF @ 250 Volt (gone leaky), checked/replaced CR4108 (130 volt line), changed C4402 (warped), 12 volts, & 5 volts standby is fine, 5 volts to EEPROM, & tact switches, but 130 volt line is +146 volts dc. B+ to LA7610 main jungle IC +7 volts. B+ to horizontal output, & drive is + 146 volts, & unit won't start. What did I miss? Rono.

Reply to
Rono
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Rono: Remove, burnish and resolder HDrive xfmr pins and upgrade/resolder OBT grounds and jungle shield grounds per TCE service recommendations. Use chipper checker to download setup information and replace EEPROM. electricitym . . .

R> RCA 25" M # 25GT536, chassis # CTC177AG. Unit was dead,

+146

output,

Reply to
electricitym

You need to scope the SDL to see if the micro is getting the handshake from the eeprom. If it does, you need to scope the horiz drive signal out of the T chip.

John

Reply to
John-Del

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