#31
|
||||
|
||||
try a rectifier diode lowest you got. get close as you can to 35 volts. check the resistance on the resistor network. i could tell you how to do voltage checks, if i do i would like for you to at least watch some u tube videos. need to see if you your 23v supply and 13.6 off the vert side of yoke and 7.6v supply from jungle ic. i am betting the output ic. get an idea on checking voltage and i can tell where to check.
|
#32
|
|||
|
|||
Quote:
|
#33
|
|||
|
|||
I have new diodes showing 8435 SA7.OA
|
#34
|
||||
|
||||
you have a sa8.0a that's 13.6v. you could try it, but i suggest voltage checks first.
|
#35
|
|||
|
|||
Looks like the sa7 is all I have besides a sa5
|
Audiokarma |
#36
|
||||
|
||||
PAC
saw ur message. jbattles giving you good help so far. I will jump in with comments. 1) several resistors in around the vert IC look overheated. Cant tell for sure but they are the 2 light blue ones. 2) if you order parts buy a new vert out IC, they should be under $10. 3) look under the vert out IC. See if it has bad joints or is getting toasty brown. 4) try tapping the chassis & see if the pix returns to normal. The CTC203 was the last true RCA then they went China. I only saw a hand full & that means either not many were built or they were very reliable. Hence I have little knowledge of them. Good luck Zeno LFOD ! |
#37
|
|||
|
|||
Quote:
|
#38
|
||||
|
||||
Note that most training manuals dont show everything. It would help
to get a copy of the service manual, any CTC203-## should work. Even just the vert area. At that point you can decide weather to troubleshoot or shotgun. 73 Zeno LFOD ! |
#39
|
|||
|
|||
Should I just go ahead and order the ic?
|
#40
|
|||
|
|||
Where do I order the ic?
|
Audiokarma |
#41
|
||||
|
||||
A few OEM-NOS RCA parts distributors. I dont know who they are sry.
For them you need the 6 digit RCA part #. Format is ######. It probably starts with a 2. Also have the FULL chassis # & the designation of the IC ( such as IC### ) from the PCB just in case. Alt is pull the old IC & get the generic numbers off that IF it has any. Also if the IC got real hot the numbers can fade away. They can be searched for & often subbed to a replacement line such as TCG. 73 Zeno LFOD ! |
#42
|
|||
|
|||
Ty 👍
|
#43
|
||||
|
||||
RCA part number is 215531 or tda8172
i probley have some of them |
#44
|
|||
|
|||
How much for it if u do?
|
#45
|
|||
|
|||
I might even have some of the Parts you need for your TV in my parts stash, a few years back the local Salvation Army Store (before they closed up shop for good during the pandemic) had a couple of baskets full of old electronics parts that came from a local appliance repair shop that went out of business because the owners passed away, in that basket was a bunch of RCA, Zenith, Magnavox (NAP) ICs for TVs and VCRs.
|
Audiokarma |
|
|