The below mentioned stuff was my first request on this forum on April 17, 2018 with 172 views , 0 replies
https://www.eevblog.com/forum/repair/repairs-of-hp-8594a which is now (today) locked due to duplicate thread.
Everyday I used to edit my post to bring it on top becoz no replies were received & the topic was fading from page 1. I tried for 3 days , then made one more post ( present post )
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Online kenramesh
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repairs of HP 8594A spectrum analyser
« on: April 17, 2018, 07:13:49 pm »
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hello all ,
I have been facing problem with HP 8594A spectrum analyser.
1.As the instrument is switched on , FREQ UNCAL is displayed which is a permanent fixture.
2.When i try to calibrate using CAL OUT the result is SIGNAL NOT FOUND & SRQ110.
3. The trace line is slow in movement , data entry response also appears to be slow.
I couldn,t find service manual for 8594 series , but tried using 8590 series one.
As per that manual either A7 analog pcb, A16 processor , counter lock , or YTO may be faulty but not able to zero-on by using this manual.
I observed the following:
1.on A7 analog interface board Q1 is getting warm
but if cable running to YTO removed from the PCB, heat is normal.
2. FREQ UNCAL disappears & trace line moves fast when Counterlock board flat cable is removed
waiting for ur help Pls suggest how do proceed.
Thanx in advance
Locked due to duplicate thread:
https://www.eevblog.com/forum/repair/help-needed-to-repair-hp-spectrum-analyser/msg1494742/#msg1494742« Last Edit: Today at 04:19:33 pm by gnif » "
I did mention in detail the problems I was facing in my first thread . I was considerate , but dint receive any reply.
In my new thread , even if my opening post was short , as soon I received reply I mentioned all the problems I was facing with the SA.
Iam not complaining or blaming but as you mentioned consideration , manner , deligence , I thought of mentioning it to u.