12-03-2017, 04:32 PM
The Holiday was the entree level Predicta 19" crt and series strung heaters/voltage doubler p/s. The 17" sets use a power transformer. Both are no picnic to service! The sweep, sync, and audio circuits are on the main circuit board but back then wire wrap technology was used to attach abt 30 wires to the this board. These have to come off to remove the board so you can get to the under side to unsolder parts. There are several couplets (resistor/cap combinations molded together) that are often bad causing sweep and sync problems.
The crt has a low voltage heater (abt 2v) and a 110deg deflection angle, that's how they can make the crt rather short. With that being said the crt's are hard to come by these days. Would test the old one before investing a lot of time repairing the chassis.
I've a a Siesta model but haven't dug into it yet.
Google is your friend. Lot's of info is out on the net.
Eletro, Be careful what you wish for you may get it!!!
GL
The crt has a low voltage heater (abt 2v) and a 110deg deflection angle, that's how they can make the crt rather short. With that being said the crt's are hard to come by these days. Would test the old one before investing a lot of time repairing the chassis.
I've a a Siesta model but haven't dug into it yet.
Google is your friend. Lot's of info is out on the net.
Eletro, Be careful what you wish for you may get it!!!
GL
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
