2001 Sanyo DS27510 -Horozontal Line

[radiotvnut]

What usually happens with Sanyo TV's from this era:

1. Cold solder connections on the vertical output IC (the IC will be a stand up IC that's mounted on a heatsink). Resolder the IC connections before doing anything else (you might get lucky).

2. Vertical boost capacitor fails and takes out the vertical IC and possibly the B+ feed resistor and the B+ diode. This capacitor will likely be either a 100uf or 220uf and it should be replaced, even if all you had to do was solder the connections. The symptoms of this capacitor going bad are lines and foldover at the top of the screen. After awhile, the condition of the capacitor will get worse and it will burn up the IC.

I don't have a schematic for this set; but, you should be able to google the part number of the IC and get a pin-out diagram. Once you have that, determine where the B+ voltages enter the IC and check those voltages (with the old IC removed). If the voltages are missing, trace the circuit back until you find the resistor and diode that supplies these voltages (usually off the flyback transformer). More than likely, the resistor and/or diode will be bad. When working on the set in this condition, do so for as little as possible to prevent a line from being burned into the CRT. Or, unplug the CRT socket or turn the G2 control on the flyback down.

Sanyo CRT TV's are usually pretty good and once you fix the vertical issue, it will probably last you for several more years.