Pico fuses what do the pico fuses look like im not sure what im looking at

The amperage is marked on the board right next to them--likely if they go to the convergence circuit they will be marked 5a or 5 amp.

Usually but not always there are more at the convergence chips.

I presume you did not look closely at the board where the two you found are---Sony marks everything.

Hi,
Make sure +24V and -24V are present in power supply and being supplied to convergence output chips to solve 2-2 error problem.
Thanks.

that is the correct one but if you had a surge it would have fried a lot more than just the fuse surges are so fast they can even blow up a device and leve the fuse in tact i think it needs to see the doctor

Tries Websites Tv repair World.com,Tvrepairkits.com and Ebay.com look for the pico fuses.

Call Mats Electronics they have everything 1-800-628-1118 and did you CK the pico fuses in front of your ICs and there is some behind them picos look like resistors they will be green or yellow 5amps 6 amps If convergence it not working after you hve replaced ICs CK the pico fuses.

All convergence circuits require two voltages which are equal, one being positive the other negative. Check the power supply for these two voltages and then see if you're getting them at the output ICs. I suspect one of them is missing or low. If there are no cooked resistors near the ICs, inspect the fuses that protect those two voltage sources or the regulating devices themselves.


michtech

Hi again and welcome back to FixYa,

Appreciate the direct "Ask Me'.

Based on your original post, only the STK ICs were replaced. Presumably 392-040, the surrounding resistors and pico fuses could very well have been affected as well. Depending on the board revision (pls confirm location numbering on the actual board), the resistors could be:
RZ104 -RZ106 - 270 Ohm 1/2watt
RZ133-RZ135 - 27K Ohm 1/16 watt
RZ136 & RZ138 - 3.3K Ohm 1/8 watt
RZ146 and RZ147 - 3.9 Ohm 2 watt
RZ148 and RZ149 - 150 Ohm 2 watt
while the pico fuses would look like the image below.

Good luck and Thank you for using FixYa.

Pico fuses could be through out the board... And the service manual, if it has a parts list, does give the board designation for all the picos on it...
Although these are good pictures they don't show a great deal of detail... But picture 1 & 2 at the far left, above where the two sets of blue wires are plugged in - looks like a pico piggy-backed on top of another pico... Sometimes it's easier than desoldering the original pico just to piggy back them in this fashion - but it's not a good practice.
Start there and read the designation on the board... Then look in the parts list section of the service manual and find the others by their designation.
Bill

Pico means small and these look like little small resistors, but don't have stripes like resistors, just part numbers. They should measure as a dead short and be in the immediate vicinity of the STK's

RED light is protect circuit = do not disable !
Look for C702 near flyback transformer - might be hidden in
glue = check it = if shorted, replace 102K / 2KV with 3KV =
Sony part # 1-161-754-00 and replace E994 pico fuse.....T.