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Yes, they are.? And, yes, they suck! Sent from my Verizon, Samsung Galaxy smartphone

I don't think that Z5U types are still being manufactured; I know surface mount types were phased out years ago.? Maybe really cheap disk types are still being made.?? -Dave To: [email protected]

Really neat practical fix very tidy I am doing a 466 which uses six caps so how would that board work there would have to mount one closest to the transformer to the main board? What are you asking

Now sorry I posted here after the responses received so far. I didn't ask for advice on how to repair the board, or comments on my helplessness, but rather, a pointer to someone (knowledgeable) who

Recently, I had a problem with the LV supplies in my 465B. Thinking it was a shorted electrolytic can, I decided to replace all of them (although it turned out to be a shorted tantalum but had already

And yet the scope is stable enough already. There is an old saying: "If it ain't broke, don't fix it." -Chuck Harris Jim Olson wrote:

Forgot to add that the higher class 2 have much less change to capacitance +-15% vs +20%-85% so should make the scope more stable. Jim

Here is a pondering question for you all to think on. How many of you have considered replacing (upgrade) the ceramic disc caps to a higher class 2 grade like X5R or X7R to replace all the Z5U ones

Yes forgot to tell him to check for that too... but in my defense it was implied in my generic "meets or exceeds specs" general statement ^^ Of course in case of gate capacitance, "exceeds" means

Unless it's an expensive IC, troubleshooting a circuit like that is difficult since it is only read once while the SA is booting up. That's why most people would just change a gumdrop IC to attempt

To be fair, some of the members are just getting into electronics. I've been at it for over 50 years. At one point I spent eight hours a day testing new circuit boards and repairing the bad ones. My

Hi Vincent, this is funny, after my previous post I went looking for a Faster, Lower On-resistance, Higher Voltage FET, and found this one: IPA60R280E6 , so this is in the same area as the one you

On Tue, 24 Jul 2018, Michael A. Terrell wrote: It is simply astonishing how helpless some people are :) If one wants to replace a DIP IC he doesn't need _ANY_ specialized desoldering equipment. Just

Well …, I don't yet know that it needs to be replaced. The buffer IC may not be the problem and I don't want to begin changing parts until I have a more conclusive idea as to which part to change.

Hi Leo, I fixed a couple of 22XX SMSP. The one in my 2232 last summer, and the other day the one in my 2215. The regulator is not too fussy as to what FET model you use to replace the old one.... AS

Where are you located? Someone on the group may live nearby. I would offer to replace it for you, but I can't get to my workbench until I finish disposing of the things my family stored in the

The switches are enabled to the data bus via tri-state buffer and an enable signal that occurs just once during boot up. Challenging to trouble shoot with my limited test equipment. And, if the buffer

I only have the user manual for that model, but the SA has to read the switches, usually through a latch that is polled at startup. That is where I would start troubleshooting. Michael A. Terrell

Hey Mike, Ive done three 500 Series restorations recently - 549, 547 and a 535,not a 555 though Tried to document as much as possible below,