Javier Chavez C

46.781

hace 5 años

Diagram Here
https://diagramasde.com/blog/25802/Philco-chasis-CM-003-pdf-PHILCO-TV20V4-CM-003.html

Javier Chavez C

46.781

hace 5 años

In the diagram it can be seen that the inputs AV1 and AV2 are connected in parallel, so if one of them does not work the problem would be in the VIDEO input connector (Internally it has a switch)

maxi2246

87

hace 5 años

Thanks Javier I'm going to be checking that connector and then comment

maxi2246

87

hace 5 años

Thank you very much for the help, Javier Chavez, rewrite the eeprom memory and work again.

Javier Chavez C

46.781

hace 5 años

Thank you for sharing the solution.
Until a next opportunity.

luis tartaglia

17.741

hace 5 años

So the diagram is wrong. If colleague Javier says that the auxiliary inputs according to the diagram are in parallel. If you have front AV audio and video you must also have it in rear AV. And memory has nothing to do with this failure.
Or the entries DO NOT go in parallel.

luis tartaglia

17.741

hace 5 años

In parallel, none would work.

luis tartaglia

17.741

hace 5 años

Clarify the topic well so help others.

Javier Chavez C

46.781

hace 5 años

Keep in mind that many times, the diagrams differ and there are variants compared to the card circuit.
If the colleague replaced the EEPROM and the fault disappeared, the logic indicates that there was the problem.