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  • peapvp's Avatar
    Today, 01:18
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, No problem. If you did the mod exactly per Sewerzuks Video then you got 208 on T2 H1 / H2 If you didn't move the X8HH wire which connects...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 22:31
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, on the second VR the switch timing is off, hence the lower DC on R/S - a cap going bad.... on the other hand, 123 VAC on X1 / X3...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 21:59
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, Thank You. I meant testing while the A11 is installed in the genset and genset running Peter
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 20:51
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, Thank You! The very last test I would like to know/perform: With the Genset set to 120/208 on the reconnection board and A11...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 19:59
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, Thank you. If I understand you correctly then the A11 assembly you normally use has 50.7VDC which understandable moves the 125VAC point of...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 19:42
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, I had to look through some old Datasheets: The 4148 was the replacement for the original 914 and had less leakage current as the...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 18:45
    peapvp replied to a thread MEP-004A, No out put in Generators
    1N914(-TAP) has the same values / characteristics as 1N4148 so either should work better then a 1N40xx Peter
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 17:32
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, CR9 is not listed in the parts manual, but from the pic I got it starts with 1N and its a glass diode. So, this maybe a 1N4148 or from...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 17:07
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, thank you - with the 45.5 VDC A11 in the gen - how much can you regulate the output voltage of the genset up and down with the front panel...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 17:01
    peapvp replied to a thread MEP-004A, No out put in Generators
    Ok folks, here it is. Math: Original T2 Transfer Ratio: 208VAC to 128VAC = 1.625 : 1
    298 replies | 3225 view(s)
  • peapvp's Avatar
    Yesterday, 12:40
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, I have one more suggestion for you. I don't know on how many DMM's you have available, but if possible, I would hook up one DMM in AC Range...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-13-2019, 18:24
    peapvp replied to a thread MEP-004A, No out put in Generators
    Brian, good choice on the SCR's from Vishay! Here is the Datasheet: I marked a few things to check in the pic below. This is a typical...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-13-2019, 09:31
    peapvp replied to a thread MEP-004A, No out put in Generators
    The main culprit in this system is the missing fuse on the supply to T2. The SCR's back then were not that good as the silicone was not up to today's...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-12-2019, 19:04
    peapvp replied to a thread MEP-004A, No out put in Generators
    So, now you know that I am old enough to blow a gasket now and then.... Anyway, lets proceed to the good news and the conclusion of the repair of...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-12-2019, 18:03
    peapvp replied to a thread MEP-004A, No out put in Generators
    You may want to bring this to the attention of the administrator.... Otherwise we can hope only that any interested person is going to read all...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-12-2019, 17:54
    peapvp replied to a thread MEP-004A, No out put in Generators
    So, to cut through the chase - the first replacement Transformer T2 I had sourced does not work. If you have bought one already then you may want...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-12-2019, 17:31
    peapvp replied to a thread MEP-004A, No out put in Generators
    Kris, there is a bottom bar on each post where you can click thank you on someone else's post. On the posts you posted there is a clickable...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-12-2019, 14:53
    peapvp replied to a thread MEP-004A, No out put in Generators
    Probably a good idea. I would add the new transformer part number / link to it
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-12-2019, 12:33
    peapvp replied to a thread MEP-004A, No out put in Generators
    Thanks Brian, that's pretty much what I got on Kris's unit. I will publish the details later. Kris's A11 is basically ready to go. However the...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-11-2019, 22:26
    peapvp replied to a thread MEP-004A, No out put in Generators
    and Brian one more question which would greatly enhance the testing. Could you please tell me of what the AC current is on H1 in Test 2 when you put...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-11-2019, 22:10
    peapvp replied to a thread MEP-004A, No out put in Generators
    Thank you Brian for the info! Could you do me a favor and measure the DC Resistance on your T2 between H1 + H2, X1 + X3, X1 + X2 and X2 + X3 so I...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-11-2019, 20:34
    peapvp replied to a thread MEP-004A, No out put in Generators
    Ok, so here is the recorder print out - the whole print is app 1066.8 millimeters / 5 = 213.36 seconds = 3 minutes 33.36 seconds The entire test...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-11-2019, 18:01
    peapvp replied to a thread MEP-004A, No out put in Generators
    This should be of interesst to Brian to assist with the repair of the two VR Boards he got: Kris had bought already a replacement Voltage...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-11-2019, 14:23
    peapvp replied to a thread MEP-004A, No out put in Generators
    Guy, There is also an error in DC Schematic for all three Versions, the 004A. 005A and 006A It is the momentary Toggle Switch S3 which has two...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-11-2019, 12:50
    peapvp replied to a thread MEP-004A, No out put in Generators
    Great! I saw only Q5. I don't think the 004A schematic got those errors here but I would have to look. I was primarily concerned with the testing...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-10-2019, 19:54
    peapvp replied to a thread MEP-004A, No out put in Generators
    Today I was finally able to do the Boost Test as per Manual TM 9-6115-464-34 Pages 3-276 and 3-277 and Thank You Brian for fixing Q4 in the...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-09-2019, 20:33
    peapvp replied to a thread MEP-004A, No out put in Generators
    Actually, a DMM to test the final resistance would be enough to modify the Transformer. As of right now I need to check the wire gauge used to...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-09-2019, 17:59
    peapvp replied to a thread MEP-004A, No out put in Generators
    Ok, I am adding the Datasheet for U1 here which is a Precision Voltage Regulator UA723HM which is the Metal Can, extended temperature version and...
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-08-2019, 21:26
    peapvp replied to a thread MEP-004A, No out put in Generators
    I hope this works better then the Klein small Side Cutter I got to cut pins of components after soldering (for those parts which are hand soldered)....
    298 replies | 3225 view(s)
  • peapvp's Avatar
    09-08-2019, 20:53
    peapvp replied to a thread MEP-004A, No out put in Generators
    Yes, and your new cap
    298 replies | 3225 view(s)
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About peapvp

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About peapvp
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Basehor, KS
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MEP Gensets
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Electrical Engineer

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Peter
INOVA HIGHTECH Ltd.
Cage Code 6ZJM5

MEP 0xx and 8xx Auto / Remote Start Kits - THE ORIGINAL - since 2013!

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