I have recently replaced the flyback transformer for my RCA D32F750T TV with a compatible acme flyback. The picture is now dim, the colors are off, and text is blurry. All "menu" adjustments do not correct these faults and are unreadable. I was wondering what this could be, since I am more or less an amateur, and whether or not using rosin solder instead of silver solder when attaching the new flyback would cause this result.
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Re: RCA D32F750T TV
Did you adjust the two controls on the new flyback? The top one is almost always the focus control and the bottom is the G2/screen control (brightness) If you adjust the G2 do it until the picture looks normal, too high and you will get retrace lines through the picture.
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You do an adjustment on the screen nob on the flyback transformer?Resolders the CRT-(tv tube) YOKE wires R,G,B connections to the main PCB board?Resolders the video board CRT-(tv tube)video board pins sockets that connect the video board and the CRT-(tv tube) together.
Your TV has convergence chips that need to be replaced by a tech. These keep tour red green and blue lights in sync with one another in order to give you a sharp color picture. When they fail your colors seperate.
ACME has FBT with 1yr. warranty on them. 1-800-575-9833 I have Never had any Problems with flybacks from them.21.95 for part their. DO not get the HR fly they have focus and high voltage wires backwards.Most of the high voltage wires you twisted them out from flyback then reinstall in New one.And the button on end of wire is Anode button that connects in picture tube.
Update on finding replacement tripler (Flyback Transformer) for RCA F27442tx51. This is a follow up on my report dated Jan 12 2008. Further investigation revealed the Horizontal drive transistor was also blown. It is a 2SD2578. Internet search turned up ACME ENTERPRISES in Orlando Florida. www.acme-slaes.net. Surprisingly they also sell Flyback Transformers as well as other TV repair parts. The cross reference for the needed Flyback is ACME-2236 FBK. The part number for the transistor is 2SD2578 SANYO TRANSISTOR. The price for the transistor is $2.69. The Flyback is $22.95. Shipping to CA is $6.75 and handling is $1.99. Two days after ordering, the parts were at my front door. The set works now except the picture still goes off after 5 minutes or so and then comes back on, sound still works during the dark period. The original symptoms before it blew out in the middle of the night and started chirping. I now have the set on the bench attempting to find the intermittent part. Stay tuned I'm on the hunt.
When you change the flyback and the HOT you are supose to replace a small capacitor that came with the flyback and also the small coil l401 that connects the hot base to the horiz. driver transformer secondary is supose to be taken out, the leads scrapped off of insulation and resoldered into place.