开云体育

Hello, My 2465A starts up with a TEST 04 FAIL 02 diagnostic error. I understand that this has something to do with a calibration value at is limit. Is there a way to find out which calibration is

This seems reasonable: TEKTRONIX 2465A / 2467 SERVICE MANUAL http://www.ebay.com/itm/TEKTRONIX-2465A-2467-SERVICE-MANUAL-/131367342890?ssPageName=ADME:SS:SS:US:3160

Ed; You are right about the horizontal deflection circuitry in many of the late generation CRT TVs. The government was pushing for greater efficiency of electronic equipment to reduce power demands on

Yeah, and it's been a w

Siggi’s right… get the proper manual….artek’s are very good…. read the manual…. Tek has been very very good about teaching you HOW it works and then letting you trouble shoot it. The 465b

One more thing. It appears Artek Manuals have three different 465 scans for different serial ranges <http://artekmanuals.com/manuals/tektronix-manuals/

I just took a quick peek at the horizontal deflection circuit schematics. Doesn't look too frightening, first step would be to check the DC supplies. A common failure is failing or drooping supplies.

Hey Kevin, Welcome to the group. Start by grabbing the sevice manual, which can be found online. Here <http://bama.edebris.com/manuals/tek/465b/ http://bama.edebris.com/manuals/tek/465b/> is one

Hi, I think this is the easy part, you need a restore CD and a new compatable harddisk. But one should suspect another problem "hiding" behind the missing/crashed harddisk , a bad acquisition board or

Problem: 1. When you push it in (calibration position), value indication on led display remain on. 2. In this position any of the constant values (for example FAST 2.0), still affect the reference

Gary Robert Bosworth grbosworth@... [TekScopes] wrote: Use the chassis number to look for a manual. There are quite a few free service manual sites for consumer electronics.

The 454 is old enough that contact oxidation is a problem. The transistors are socketed and odd problems like a missing channel may be due to a poor contact. I've fixed more than one scope of that

Maybe it looks more promising if you know that the 454 contains no Tek-made ICs. See also http://www.reprise.com/host/scopes/scope_pick.asp http://www.reprise.com/host/scopes/scope_pick.asp Finding

Yes, that thing must be a real beast to handle and to work on. First, be aware that it can kill you if you screw up - there's the HV dangers, plus some or all of the circuitry may not be isolated from

I would say you have a number of bad capacitors. Check the caps in the power supply, around the flyback, and in the vertical circuit with an ESR meter if you have one. If you want to keep the TV, stop

It sure sounds like a power supply problem, maybe a high esr capacitor? But if it were me, I would just replace it with a LED LCD flat screen new TV and let the savings on the electric bill pay for

Good day. I'm having some trouble with my beloved Tektronix 465B and I'm hoping some gurus on this list may be able to assist me. Let me first say that I am a fledgling electronics hobbyist and have

Rich: I never worked on TVs, but numerous disimilar problems are usually associated with the power supply which supplies all the different circuit parts. I am surprised you cannot get a schematic from

Ronan, I think you will find the 454 much easier to work on than a 485. The cover comes off easily, and many (not all) circuits can be accessed conveniently. --John Gord

Does changing the brightness also change the focus of the picture? If so the CRT may be conducting too much due to improper bias of the control and screen grids. Vertical fold-over can also be an