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Troubleshooting: Hantarex Polo/2 15/25 kHz no picture (euro)

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tobiasbpdk:
I have found the following schematics: https://media.recreativas.org/manuales/hantarex-polo-2-esquemas.pdf

 I'm unable to locate R153, even though I can find T23, R152 & R155? (Main board). However, R153 IS listed as a spare part on page 7.

Do you think the schematics are for a different chassis?

princess prin prin:
Those are the only Polo/2 dual freq. schematics I've ever seen. They're for chassis intended to drive tubes with 110-degree deflection angle, i.e. 25" and bigger (yours is a 20" 90-degree).

R153 is in the last bit of schematics (before spare parts list) to the left of the flyback (TH3), in parallel with L12 and C110 and going to pin 3 of the flyback.

tobiasbpdk:

--- Quote from: princess prin prin on April 23, 2025, 11:35:46 am ---They're for chassis intended to drive tubes with 110-degree deflection angle, i.e. 25" and bigger (yours is a 20" 90-degree).

--- End quote ---

Would the difference between a 110-degree and a 90-degree chassis just be the component values, or would the circuits be different as well?



--- Quote from: princess prin prin on April 23, 2025, 11:35:46 am ---R153 is in the last bit of schematics (before spare parts list) to the left of the flyback (TH3), in parallel with L12 and C110 and going to pin 3 of the flyback.

--- End quote ---

Ah. I see it now. Thank you!

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