![]() |
|
#1
|
|||
|
|||
|
RCA CRT TV - Chassis CTC169CF
Hi all,
I've found great help in the audio forums here and have a TV repair project where I could use some input. It's an RCA model F27227EM with chassis number CTC169CF. The symptom is 'no power', more specifically it blows the internal fuse as soon as it is plugged in (not even turned on). I immediately noticed that the movistor(?) in the power section was detached from the two wires that were suppose to be soldered to it, and was still in place only because the wires had it trapped. I've now pulled the 4 bridge rectifier diodes and they measure infinity in the reverse direction, but 10Mohms in the forward direction when I should be seeing 0. I have also pulled the 200v 680uf electrolytic (C7K?) in the same area and it seems to measure 0uf on my multimeter but is not shorted. I'm working without a schematic though, so I'm working more by deduction than facts. The 2.7ohm 15W resistor tests OK in circuit, and everything looks OK visually. So my questions to anyone familiar with this stuff or with a schematic, are there any other parts in that section I should check? Do you think I got it all, or am I likely to blow up new parts in search of something bad further down the path... maybe the TV isn't worth the trouble? What about the 180v 47uf cap, do I need to pull that? Kind of a pain to get to. Thanks! |
|
|