Riddled TV Repair Forum

JohnnyZ · Joined: 04 Aug 2009 Posts: 2 Location: Mesa, AZ

Dear pros,

Brand: Philips Magnavox
Model: TS3258 C101
Chassis: 32D700-7570

I was watching TV and with out any provocation, it just turned off, as if it thought I had had enough! Tried turning it back on with no response. I pulled out the TV and took off the back. When plugged in, it makes a quiet electrical snap sound about one per second. Sounds like it is coming somewhere from the center of the board, hard to tell exactly where because I couldn't get my big head in there. I thought of wipping out the guitar and jamming to the beat, but decided to try and fix it (break it more) instead.

I jumped online and started reading. I found several people with issues similar, but their front power light would work or would be flashing, mine on the other hand does nothing.

I took the TV to the garage and blew off all the dust and pulled the main board. After careful scrutinizing, I see no deformed caps or blackened areas. I guess its time to start testing components, but I though one of you pros could give me a pointer as to where to start looking.

Thanks much in advance,
Johnny

Google

JTS1957 · Joined: 21 Jan 2009 Posts: 2395 Location: Far, Far Away

Switched Mode Power Supply and Horizontal Output circuits are always a good place to start testing transistors and diodes. Smile

Could also have bad capacitors or Flyback.

JohnnyZ · Joined: 04 Aug 2009 Posts: 2 Location: Mesa, AZ

I started by checking the cap in 2634 which I've been told is a weak point on this model, but it looked fine and read infinity (all i have to test is a standard meter) BUT while soldering it back on I saw a small crack on cap 3908. I pulled it from the board and it measures 12.2 ohms. Im I wrong, or shouldn't it be infinity?

It is a small round dirt red cap which says "100" above some distorted symbol and "87". Can you help identify this cap?

Thanks in advance,
Johnny